Versus

reviv serums Ultimate Serum Versus Numbuzin No.5 Vitamin Concentrated Serum

Serum
Serum
American Brand United States
Korean Brand South Korea

Updated on April 08, 2025

Overview

What they are

These products are both cruelty-free and reef safe serums. They have a total of 12 ingredients in common

Cool Features

They both contain Vitamin C and Vitamin E

Suited For

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

Free From

They both do not contain any common allergens, parabens, silicones or sulfates

We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.

Ingredient Info

Click any item below to learn more and see relevant ingredients

What's inside (and what isn't)

What's inside (and what isn't)

At a glance

Click on any of the items below to learn more

Key Ingredients

Benefits

Concerns

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

found in both products
Ultimate Serum

Water

Skin Conditioning

Pentylene Glycol

Skin Conditioning

Hamamelis Virginiana Extract

Antiseborrhoeic
Can worsen Dry Skin IconMay worsen Eczema IconMay worsen Rosacea Icon

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin IconGood for Scar Healing IconHelps brighten skin Icon

Dimethyl Sulfone

Solvent
Good for Oily Skin IconHelps fight Acne Icon

Human Umbilical Mesenchymal Stem Cell Exosomes

Skin Conditioning

Alpha-Arbutin

Antioxidant
Antioxidant IconGood for Dark Spots IconGood for Scar Healing Icon

Palmitoyl Tripeptide-5

Skin Conditioning
Peptide IconHelps with Anti-Aging IconNot safe for Fungal Acne Icon

Ergothioneine

Antioxidant
Antioxidant IconHelps reduce irritation IconGood for Dark Spots Icon

Dipalmitoyl Hydroxyproline

Skin Conditioning
Not safe for Fungal Acne Icon

Ubiquinone

Antioxidant
Antioxidant IconHelps with Anti-Aging IconGood for Dark Spots Icon

Saccharomyces Ferment Lysate Filtrate

Skin Conditioning

Tetrahexyldecyl Ascorbate

Antioxidant
Vitamin C IconAntioxidant IconHelps reduce Skin Redness IconGood for Skin Texture IconGood for Minimizing Pores IconHelps brighten skin Icon

Sh-Oligopeptide-1

Skin Conditioning
Peptide IconHelps with Anti-Aging IconGood for Scar Healing Icon

Rh-Polypeptide-3

Skin Conditioning
Peptide Icon

Sh-Polypeptide-9

Skin Conditioning
Peptide Icon

Sh-Polypeptide-1

Skin Conditioning
Peptide Icon

Sh-Polypeptide-11

Peptide IconHelps hydrate Dry Skin IconHelps with Anti-Aging IconGood for Scar Healing Icon

Human Urine Derived Stem Cell Conditioned Media

Emollient

Glycereth-7 Triacetate

Emollient

Ethoxydiglycol

Humectant
0 / 0

Lactococcus Ferment Lysate

Skin Conditioning

Chlorella Vulgaris Extract

Skin Conditioning
Helps hydrate Dry Skin Icon

Saccharide Isomerate

Humectant
Helps hydrate Dry Skin Icon

Tripeptide-2

Skin Conditioning
Peptide IconHelps with Anti-Aging IconGood for Dark Spots Icon

Dimer Tripeptide-43

Peptide Icon

Vitis Vinifera Flower Cell Extract

Masking

Pyrus Malus Fruit Extract

Skin Conditioning
Helps hydrate Dry Skin Icon

Hydroxyacetophenone

Antioxidant
Antioxidant IconHelps reduce irritation Icon

Tocopheryl Acetate

Antioxidant
0 / 0 Vitamin E IconAntioxidant Icon

Propanediol

Solvent
Helps hydrate Dry Skin Icon

Xanthan Gum

Emulsifying

Lecithin

Emollient
Helps hydrate Dry Skin Icon

Pullulan

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Sodium Citrate

Buffering

Polysorbate 20

Emulsifying
0 / 0 Not safe for Fungal Acne Icon

Tetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate

Skin Conditioning

Palmitoyl Dipeptide-5 Diaminobutyroyl Hydroxythreonine

Skin Conditioning
Peptide IconNot safe for Fungal Acne Icon

Palmitoyl Tripeptide-1

Skin Conditioning
Peptide IconHelps hydrate Dry Skin IconHelps with Anti-Aging IconNot safe for Fungal Acne Icon

Palmitoyl Tetrapeptide-7

Skin Conditioning
Peptide IconHelps with Anti-Aging IconNot safe for Fungal Acne Icon

Acetyl Hexapeptide-51 Amide

Skin Conditioning
Peptide Icon

Nannochloropsis Oculata Extract

Humectant

Centella Asiatica Extract

Cleansing
Helps reduce Skin Redness IconHelps reduce irritation IconHelps with Anti-Aging Icon

Chondrus Crispus Extract

Skin Conditioning
Helps hydrate Dry Skin Icon

Equisetum Arvense Extract

Astringent

Geranium Maculatum Extract

Tonic

Taraxacum Officinale Root Extract

Skin Conditioning

Achillea Millefolium Flower Extract

Antioxidant
Antioxidant Icon

Curcuma Longa Rhizome Extract

Skin Conditioning

Spirulina Platensis Extract

Skin Protecting

Aloe Barbadensis Leaf Juice

Skin Conditioning
Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation Icon

Cassia Angustifolia Seed Polysaccharide

Skin Conditioning

Simmondsia Chinensis Seed Oil

Emollient
0-2 / 0 Oil IconHelps hydrate Dry Skin IconGood for Scar Healing IconNot safe for Fungal Acne Icon

Arginine

Masking
Good for Scar Healing IconNot safe for Fungal Acne Icon

Aspartic Acid

Masking
Helps hydrate Dry Skin Icon

Glycine

Buffering
Helps hydrate Dry Skin Icon

Alanine

Masking

Serine

Masking
Helps hydrate Dry Skin Icon

Valine

Masking

Isoleucine

Skin Conditioning

Proline

Skin Conditioning

Threonine

Helps hydrate Dry Skin Icon

Histidine

Humectant
Helps hydrate Dry Skin IconHelps with Anti-Aging IconGood for Scar Healing Icon

Phenylalanine

Masking
Helps hydrate Dry Skin IconGood for Scar Healing Icon

PCA

Humectant
Helps hydrate Dry Skin Icon

Sodium PCA

Humectant
0 / 0 Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation Icon

Sodium Lactate

Buffering

Sodium Chloride

Masking
Can worsen Dry Skin IconBad for Acne Prone Skin IconMay worsen Rosacea Icon

Carbomer

Emulsion Stabilising
1 / 0

Alcohol

Antimicrobial
Alcohol IconCan worsen Dry Skin IconMay worsen Oily Skin IconMay cause irritation IconMay worsen Eczema IconMay worsen Rosacea Icon

Hydroxyethylcellulose

Emulsion Stabilising

Acrylates/C10-30 Alkyl Acrylate Crosspolymer

Emulsion Stabilising

Sodium Hydroxide

Buffering

Potassium Sorbate

Preservative
Preservative Icon

Sodium Benzoate

Masking
Preservative Icon

Dextran

Helps hydrate Dry Skin Icon

Disodium EDTA

Phenoxyethanol

Preservative
Preservative Icon

Ethylhexylglycerin

Skin Conditioning

Water, Pentylene Glycol, Hamamelis Virginiana Extract, Glycerin, Dimethyl Sulfone, Human Umbilical Mesenchymal Stem Cell Exosomes, Alpha-Arbutin, Palmitoyl Tripeptide-5, Ergothioneine, Dipalmitoyl Hydroxyproline, Ubiquinone, Saccharomyces Ferment Lysate Filtrate, Tetrahexyldecyl Ascorbate, Sh-Oligopeptide-1, Rh-Polypeptide-3, Sh-Polypeptide-9, Sh-Polypeptide-1, Sh-Polypeptide-11, Human Urine Derived Stem Cell Conditioned Media, Glycereth-7 Triacetate, Ethoxydiglycol, Lactococcus Ferment Lysate, Chlorella Vulgaris Extract, Saccharide Isomerate, Tripeptide-2, Dimer Tripeptide-43, Vitis Vinifera Flower Cell Extract, Pyrus Malus Fruit Extract, Hydroxyacetophenone, Tocopheryl Acetate, Propanediol, Xanthan Gum, Lecithin, Pullulan, Butylene Glycol, Sodium Citrate, Polysorbate 20, Tetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate, Palmitoyl Dipeptide-5 Diaminobutyroyl Hydroxythreonine, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Acetyl Hexapeptide-51 Amide, Nannochloropsis Oculata Extract, Centella Asiatica Extract, Chondrus Crispus Extract, Equisetum Arvense Extract, Geranium Maculatum Extract, Taraxacum Officinale Root Extract, Achillea Millefolium Flower Extract, Curcuma Longa Rhizome Extract, Spirulina Platensis Extract, Aloe Barbadensis Leaf Juice, Cassia Angustifolia Seed Polysaccharide, Simmondsia Chinensis Seed Oil, Arginine, Aspartic Acid, Glycine, Alanine, Serine, Valine, Isoleucine, Proline, Threonine, Histidine, Phenylalanine, PCA, Sodium PCA, Sodium Lactate, Sodium Chloride, Carbomer, Alcohol, Hydroxyethylcellulose, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Sodium Hydroxide, Potassium Sorbate, Sodium Benzoate, Dextran, Disodium EDTA, Phenoxyethanol, Ethylhexylglycerin

No.5 Vitamin Concentrated Serum

Water

Skin Conditioning

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Niacinamide

Smoothing
Niacinamide IconGood for Oily Skin IconHelps reduce Skin Redness IconHelps reduce irritation IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing IconHelps fight Acne IconHelps brighten skin Icon

Panthenol

Skin Conditioning
0 / 0 Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation IconGood for Scar Healing Icon

Tranexamic Acid

Astringent
Helps reduce irritation IconGood for Dark Spots IconGood for Scar Healing Icon

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Skin Conditioning, Solvent

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.

You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Stay hydrated!

Learn more about Water
Skin Conditioning, Solvent

Pentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.

The hydrophilic trait of Pentylene Glycol makes it a humectant. As a humectant, Pentylene Glycol helps draw moisture from the air to your skin. This can help keep your skin hydrated.

This property also makes Pentylene Glycol a great texture enhancer. It can also help thicken or stabilize a product.

Pentylene Glycol also acts as a mild preservative and helps to keep a product microbe-free.

Some people may experience mild eye and skin irritation from Pentylene Glycol. We always recommend speaking with a professional about using this ingredient in your routine.

Pentylene Glycol has a low molecular weight and is part of the 1,2-glycol family.

Learn more about Pentylene Glycol
Humectant, Skin Conditioning, Skin Protecting

Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.

A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.

As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.

Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.

Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.

In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.

This ingredient is organic, colorless, odorless, and non-toxic.

Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.

Learn more about Glycerin
Antioxidant, Bleaching, Skin Conditioning

Alpha-Arbutin is made from hydroquinone and glucose. It may also be derived from the fermentation of soybeans.

This ingredient an antioxidant, meaning it helps protect your skin cells against damage.

Studies show this ingredient helps improve hyperpigmentation and fade discoloration.

Alpha-Arbutin may be used with other ingredients that help with hyperpigmentation. These ingredients include retinol, Vitamin C, niacinamide, and tranexamic acid.

Learn more about Alpha-Arbutin
Antioxidant, Skin Conditioning

Ubiquinone (Coenzyme Q10) is a molecule already found in our bodies. It is a potent antioxidant and skin-soothing ingredient.

Aging and environmental exposure diminishes our skin's natural ubiquinone levels. This is much like our natural collagen and elastin.

The good news is: studies show applying this ingredient topically replenishes ubiquinone levels in our skin. This also comes with a ton of skin benefits. These benefits include:

Ubiquinone is considered a large molecule and cannot be absorbed into the lower layers of skin. This is why it is believed to be such an effective antioxidant: it protects our skin in the upper layers and prevents damage in the deeper layers.

When used in sunscreen, ubiquinone is shown to increase ingredient stability, increase SPF factor, and add to infrared protection.

Fun fact: ubiquinone is fat-soluble.

Learn more about Ubiquinone
Antioxidant, Skin Conditioning

Tocopheryl Acetate is AKA Vitamin E. It is an antioxidant and protects your skin from free radicals. Free radicals damage the skin by breaking down collagen.

One study found using Tocopheryl Acetate with Vitamin C decreased the number of sunburned cells.

Tocopheryl Acetate is commonly found in both skincare and dietary supplements.

Learn more about Tocopheryl Acetate
Emulsifying, Emulsion Stabilising, Gel Forming

Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.

On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.

Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.

Learn more about Xanthan Gum
Humectant, Masking, Skin Conditioning

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.

Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.

Learn more about Butylene Glycol
Skin Conditioning

Chondrus Crispus Extract comes from a red algae native to the northern Atlantic coasts of Europe and North America. It helps hydrate the skin and is rich in antioxidants.

The antioxidants in chondrus crispus include lutein and zeaxanthin. Lutein has the ability to filter blue light from screens.

Other contents of chondrus crispus include polysaccharides, peptides, and amino acids. These help hydrate the skin.

What's the difference between algae and seaweed? Algae is a broad term that includes seaweed. Not all algae is seaweed.

Learn more about Chondrus Crispus Extract
Emulsion Stabilising, Gel Forming

Carbomer is a polymer of acrylic acid. Its main role is to create a gel consistency.

A high amount of carbomer can cause pilling or balling up of products. Don't worry, most products contain 1% or less of carbomer.

Disodium EDTA plays a role in making products more stable by aiding other preservatives.

It is a chelating agent, meaning it neutralizes metal ions that may be found in a product.

Disodium EDTA is a salt of edetic acid and is found to be safe in cosmetic ingredients.

Learn more about Disodium EDTA
Skin Conditioning

Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.

You might see Ethylhexylglycerin often paired with other preservatives such as phenoxyethanol. Ethylhexylglycerin has been found to increase the effectiveness of these other preservatives.

When to use

15 Routines
40% use in am
60% use in pm
100% use every day
952 Routines
66% use in am
34% use in pm
89% use every day
When to use See routines that use it ->

Reviews

Here's what our community thinks

reviv serums Ultimate Serum 80 ingredients

Ultimate Serum hasn't been rated yet.
Rate it now

Numbuzin No.5 Vitamin Concentrated Serum 47 ingredients

3.3 /5
from 33 ratings
No Scent (14) Hydrating (12) Broke Me Out (12)
ThomasvV's avatar

Thomas VV

5 months ago
Review

This serum is one of the best all-round anti-oxidant and dark spot serums containing:
- vitamin c
- Glutathion!!
- 5% niacinamide
- Q10
- Alpha Arbutin
(Unfortunately they removed TXA)

Skin type: combi acne prone

This is not just a dark spot serum, its a perfect anti-oxidant serum in the morning. Glutathion is a killer ingredient and the concentration of Vit C is low.

My acne Show more

#great value
#hydrating
#absorbs well
#no scent
Nel5950's avatar

Nel5950

3 months ago
Review

Works perfectly how its advertised, the changes it made to my redness and acne were done overnight. In addition to it combating irritated skin, it is hydrating as well. It’s not perfect since it hasn’t worked for my fungal acne and texture wise it is a little sticky but it absorbs into my skin very quickly. I find the shea butter can be an issue for me personally in skincare since it will also Show more

#great value
#hydrating
#broke me out
#sticky