Welcome to our breakdown of the 47 best NOT4U Firming Up Neck Serum dupes and alternatives.
Looking for dupes for a different product? You can use our Dupe Finder to search for them!
If you'd like to see the all of the NOT4U dupes that we've found, check out our best NOT4U dupes guide.
We use hundreds of science-backed factors to find you the best dupes.
Learn more about our dupe methodology
Our Roundup
Here's a quick roundup of our findings. Continue reading for the full breakdown!
Make p:rem's End Pore Vegetinol Tightening Serum is the dupe with the most similar ingredients. Our matching methodology puts it at an 45% ingredient match!
Of all of the dupes for this product, Some By Mi's Retinol Intense Reactivating Serum is the most liked by our community. Our matching algorithm puts it at an 56% overall match!
- Make p:rem End Pore Vegetinol Tightening Serum 1
- PCA Skin Rejuvenating Serum 2
- innisfree Green Tea Enzyme Vitamin C Brightening Serum 3
- Hanyul Moonlight Citron C Serum 4
- Viegano Bakuchiol + Tocopherol Revitalizing Serum 5
- Dermafirm Soothing Repair Toning Serum R4 6
- SNP Lab Niacinamide 10 Serum 7
- I Dew Care Bright Side Up 8
- Hanyul Gingko Leaf Pore Resurfacing Serum 9
- Wishful Thirst Trap Juice HA3 & Peptide Skincare Serum 10
- Neogen Agecure Extra Firming Face Serum 11
- Hanyul Yuja Vita-C Serum 12
- Too Cool For School Pink Relief Intensive Serum 13
- Celimax The Vita-A Retinol Shot Thightening Serum 14
- Somethinc 5% Niacinamide + Moisture Sabi Beet Serum 15
- innisfree Vitamin C Green Tea Enzyme Brightening Serum 16
- Banobagi Milk Thistle Repair Serum 17
- AMOREPACIFIC Youth Revolution Vitamin C Radiance Concentrator 18
- Neogen Real Bakuchiol Firming Serum 19
- Evenswiss Eventone Serum 20
- Some By Mi Retinol Intense Reactivating Serum 21
- Ginger6 Like White Snow Serum 22
- Nineless 10% Niacinamide Serum 23
- Mary & May Rose Collagen Mist Serum 24
- Fyne Hyaluron Peptide Plumping And Restoring Serum 25
- Papa Recipe Niacinamide Zinc Serum 26
- Jaxon Lane Super Serum Ultra Luminous Face Serum 27
- EYENLIP BEAUTY Centella Skin Resurrection Serum 28
- Miss Alice Face It You Love Me Serum 29
- Isntree Hyper Retinol EX 1.0 Serum 30
- Luxe Organix Whitening Repair Niacinamide 10% Serum 31
- Cetaphil Healthy Renew Purified Peptides Face Serum 32
- Simple Skincare Booster Serum 10% Niacinamide (Vitamin B3) 33
- bye od-td Vita Calming Serum 34
- B.LAB Yuja Anti-Dark Spot Serum 35
- Logically Skin Aquatide Resurface Serum 36
- Isntree Green Tea Fresh Serum 37
- 111Skin Cryo ATP Sports Booster 38
- Frudia Blueberry Hydrating Serum 39
- Kiehl's Fast Release Wrinkle-Reducing 0.3% Retinol Night Serum 40
- Catrice Pore Ultra Minimizing Serum 41
- Soul Apothecary Vitamin C Brightening Serum 42
- Somethinc 10% Niacinamide + Moisture Sabi Beet Max Brightening Serum 43
- Somethinc 5% Niacinamide Barrier Serum 44
- Vegreen Fragrance-Free Nature Mucin Serum 45
- Project Lip Plump Fix Face Serum 46
- Synergie Skin XCell B Accelerated 21% Niacinamide Serum 47
Overview
What it is
Serum with 26 ingredients that contains niacinamide, peptides, PHA and Vitamin E
Cool Features
It is reef safe
Suited For
It has ingredients that are good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
It doesn't contain any harsh alcohols, common allergens, parabens, silicones or sulfates
Make p:rem End Pore Vegetinol Tightening Serum
63% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide, PHA and Vitamin E. They've got a total of 13 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
NOT4U Firming Up Neck Serum
61% match
with the ingredients and function of PCA Skin Rejuvenating Serum
Dupe Explained
These products are both serums that contain niacinamide, peptides, PHA and Vitamin E. They've got a total of 10 ingredients in common.
They both do not contain any parabens, silicones or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Price Comparison
This dupe is $73.70 less expensive than the original product. Nice find!
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
innisfree Green Tea Enzyme Vitamin C Brightening Serum
61% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide, PHA and Vitamin E. They've got a total of 11 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Price Comparison
This dupe is $0.70 more expensive than the original product.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Hanyul Moonlight Citron C Serum
60% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and Vitamin E. They've got a total of 10 ingredients in common.
They both do not contain any harsh alcohols, parabens, silicones or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
NOT4U Firming Up Neck Serum
60% match
with the ingredients and function of Viegano Bakuchiol + Tocopherol Revitalizing Serum
Dupe Explained
These products are both serums that contain peptides and Vitamin E. They've got a total of 10 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain oils.
They're both likely to be good for anti aging, dry skin, brightening skin, scar healing and dark spots.
Both products are also reef safe.
Price Comparison
This dupe is $152.59 less expensive than the original product. Nice find!
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Dermafirm Soothing Repair Toning Serum R4
59% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and peptides. They've got a total of 12 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens or sulfates. They both contain fragrances.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots.
Both products are also reef safe.
Price Comparison
This dupe is $7.41 less expensive than the original product. Nice find!
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
SNP Lab Niacinamide 10 Serum
58% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide. They've got a total of 9 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain oils.
They're both likely to be good for fighting acne, dry skin, brightening skin, sensitive skin, oily skin, reducing pores and dark spots.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
I Dew Care Bright Side Up
58% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and Vitamin E. They've got a total of 10 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain fragrances.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Price Comparison
This dupe is $18.31 less expensive than the original product. Nice find!
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Hanyul Gingko Leaf Pore Resurfacing Serum
58% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide, peptides, PHA and Vitamin E. They've got a total of 11 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain fragrances.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Wishful Thirst Trap Juice HA3 & Peptide Skincare Serum
58% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide, peptides and Vitamin E. They've got a total of 11 ingredients in common.
They both do not contain any harsh alcohols, parabens, silicones or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Price Comparison
This dupe is $15.70 more expensive than the original product.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Neogen Agecure Extra Firming Face Serum
58% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide, peptides and Vitamin E. They've got a total of 11 ingredients in common.
They both do not contain any common allergens, parabens or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Price Comparison
This dupe is $32.69 more expensive than the original product.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Hanyul Yuja Vita-C Serum
58% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and Vitamin E. They've got a total of 10 ingredients in common.
They both do not contain any harsh alcohols, parabens, silicones or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Price Comparison
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Too Cool For School Pink Relief Intensive Serum
58% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and PHA. They've got a total of 10 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Price Comparison
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
NOT4U Firming Up Neck Serum
57% match
with the ingredients and function of Celimax The Vita-A Retinol Shot Thightening Serum
Dupe Explained
These products are both serums that contain peptides and Vitamin E. They've got a total of 10 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Price Comparison
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Somethinc 5% Niacinamide + Moisture Sabi Beet Serum
57% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and Vitamin E. They've got a total of 8 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain fragrances.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
innisfree Vitamin C Green Tea Enzyme Brightening Serum
57% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide, PHA and Vitamin E. They've got a total of 10 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Price Comparison
This dupe is $2.00 more expensive than the original product.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Banobagi Milk Thistle Repair Serum
57% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide, peptides and Vitamin E. They've got a total of 9 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots.
Both products are also reef safe.
Price Comparison
This dupe is $10.60 less expensive than the original product. Nice find!
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
AMOREPACIFIC Youth Revolution Vitamin C Radiance Concentrator
57% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and Vitamin E. They've got a total of 9 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots.
Both products are also reef safe.
Price Comparison
This dupe is $168.70 more expensive than the original product.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Neogen Real Bakuchiol Firming Serum
57% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide, peptides and Vitamin E. They've got a total of 12 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Price Comparison
This dupe is $6.60 less expensive than the original product. Nice find!
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Evenswiss Eventone Serum
56% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide, peptides and Vitamin E. They've got a total of 10 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Some By Mi Retinol Intense Reactivating Serum
56% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide, peptides and Vitamin E. They've got a total of 13 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Price Comparison
This dupe is $9.00 less expensive than the original product. Nice find!
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Ginger6 Like White Snow Serum
56% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide, peptides and Vitamin E. They've got a total of 10 ingredients in common.
They both do not contain any harsh alcohols, parabens, silicones or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Nineless 10% Niacinamide Serum
56% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide, peptides and Vitamin E. They've got a total of 9 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Mary & May Rose Collagen Mist Serum
55% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and Vitamin E. They've got a total of 10 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Price Comparison
This dupe is $16.02 less expensive than the original product. Nice find!
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Fyne Hyaluron Peptide Plumping And Restoring Serum
55% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and peptides. They've got a total of 7 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Papa Recipe Niacinamide Zinc Serum
55% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide. They've got a total of 7 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain oils.
They're both likely to be good for fighting acne, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots.
Both products are also reef safe.
Price Comparison
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Jaxon Lane Super Serum Ultra Luminous Face Serum
55% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide, peptides and Vitamin E. They've got a total of 9 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
EYENLIP BEAUTY Centella Skin Resurrection Serum
55% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and peptides. They've got a total of 8 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain fragrances.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots.
Both products are also reef safe.
Price Comparison
This dupe is $20.61 less expensive than the original product. Nice find!
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Miss Alice Face It You Love Me Serum
55% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide, peptides and PHA. They've got a total of 8 ingredients in common.
They both do not contain any parabens, silicones or sulfates. They both contain fragrances.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Isntree Hyper Retinol EX 1.0 Serum
54% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide, peptides and Vitamin E. They've got a total of 9 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Price Comparison
This dupe is $16.58 less expensive than the original product. Nice find!
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Luxe Organix Whitening Repair Niacinamide 10% Serum
54% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and Vitamin E. They've got a total of 9 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens or sulfates.
They're both likely to be good for fighting acne, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Cetaphil Healthy Renew Purified Peptides Face Serum
54% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and Vitamin E. They've got a total of 10 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain fragrances.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, oily skin, reducing pores, scar healing and dark spots.
Both products are also reef safe.
Price Comparison
This dupe is $2.31 less expensive than the original product. Nice find!
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Simple Skincare Booster Serum 10% Niacinamide (Vitamin B3)
54% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and Vitamin E. They've got a total of 7 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain oils.
They're both likely to be good for fighting acne, dry skin, brightening skin, sensitive skin, oily skin, reducing pores and dark spots.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
bye od-td Vita Calming Serum
54% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and Vitamin E. They've got a total of 10 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots.
Both products are also reef safe.
Price Comparison
This dupe is $8.70 less expensive than the original product. Nice find!
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
B.LAB Yuja Anti-Dark Spot Serum
54% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide. They've got a total of 9 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens or sulfates. They both contain fragrances.
They're both likely to be good for fighting acne, anti aging, brightening skin, oily skin, reducing pores and dark spots.
Both products are also reef safe.
Price Comparison
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Logically Skin Aquatide Resurface Serum
54% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and peptides. They've got a total of 7 ingredients in common.
They both do not contain any harsh alcohols, parabens, silicones or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Price Comparison
This dupe is $9.20 less expensive than the original product. Nice find!
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Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Isntree Green Tea Fresh Serum
54% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide. They've got a total of 8 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots.
Both products are also reef safe.
Price Comparison
This dupe is $11.42 less expensive than the original product. Nice find!
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
111Skin Cryo ATP Sports Booster
54% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide. They've got a total of 9 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots.
Both products are also reef safe.
Price Comparison
This dupe is $45.73 more expensive than the original product.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Frudia Blueberry Hydrating Serum
53% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain Vitamin E. They've got a total of 12 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens or sulfates. They both contain fragrances and oils.
They're both likely to be good for dry skin, brightening skin and sensitive skin.
Both products are also reef safe.
Price Comparison
This dupe is $1.40 less expensive than the original product. Nice find!
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Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Kiehl's Fast Release Wrinkle-Reducing 0.3% Retinol Night Serum
53% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain Vitamin E. They've got a total of 9 ingredients in common.
They both do not contain any common allergens, parabens, silicones or sulfates. They both contain fragrances.
They're both likely to be good for anti aging, dry skin, brightening skin, sensitive skin and scar healing.
Both products are also reef safe.
Price Comparison
This dupe is $56.70 more expensive than the original product.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Catrice Pore Ultra Minimizing Serum
53% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and Vitamin E. They've got a total of 7 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Soul Apothecary Vitamin C Brightening Serum
53% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and Vitamin E. They've got a total of 6 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, oily skin, reducing pores, scar healing, dark spots and better texture.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Somethinc 10% Niacinamide + Moisture Sabi Beet Max Brightening Serum
51% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and Vitamin E. They've got a total of 8 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain fragrances.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Somethinc 5% Niacinamide Barrier Serum
51% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and Vitamin E. They've got a total of 8 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates. They both contain fragrances.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Vegreen Fragrance-Free Nature Mucin Serum
51% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide and peptides. They've got a total of 6 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates.
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores and dark spots.
Both products are also reef safe.
Price Comparison
This dupe is $17.70 less expensive than the original product. Nice find!
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Project Lip Plump Fix Face Serum
50% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain peptides and Vitamin E. They've got a total of 8 ingredients in common.
They both do not contain any harsh alcohols, common allergens, parabens or sulfates. They both contain oils.
They're both likely to be good for dry skin and brightening skin.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
Synergie Skin XCell B Accelerated 21% Niacinamide Serum
50% match
with the ingredients and function of NOT4U Firming Up Neck Serum
Dupe Explained
These products are both serums that contain niacinamide. They've got a total of 7 ingredients in common.
They both do not contain any harsh alcohols, parabens, silicones or sulfates. They both contain fragrances and oils.
They're both likely to be good for fighting acne, dry skin, brightening skin, sensitive skin, oily skin, reducing pores and dark spots.
Both products are also reef safe.
Learn more about this dupe
Looking for a full breakdown of the similarities and differences between these two products?
Check out our full comparison of these two products for all the details!
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