SeoulCeuticals Ultra Brightening Kojic Acid Serum Versus Numbuzin No.5 Vitamin Concentrated Serum
Updated on April 08, 2025
Overview
What they are
These products are both cruelty-free and reef safe serums. They have a total of 6 ingredients in common
Cool Features
They both contain Vitamin E
Suited For
They're both likely to be good for 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 harsh alcohols, common allergens, parabens, silicones or sulfates
What's Inside
They both contain fragrances
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
SeoulCeuticals Ultra Brightening Kojic Acid Serum 31 ingredients
Numbuzin No.5 Vitamin Concentrated Serum 47 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
SeoulCeuticals Ultra Brightening Kojic Acid Serum 31 ingredients
Numbuzin No.5 Vitamin Concentrated Serum 47 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningHamamelis Virginiana Water
Astringent
Cassia Angustifolia Seed Polysaccharide
Skin ConditioningAlpha-Arbutin
Antioxidant
Glycerin
Humectant
Aloe Barbadensis Leaf Juice
Skin Conditioning
Ganoderma Lucidum Extract
Skin ProtectingDimethyl Sulfone
SolventArctostaphylos Uva Ursi Leaf Extract
Skin ConditioningCurcuma Longa Root Extract
Masking
Glycolic Acid
Buffering
Salix Alba Bark Extract
Astringent
Pimpinella Anisum Extract
Cochlearia Armoracia Root Extract
MaskingGlycyrrhiza Glabra Root Extract
Bleaching
Schisandra Chinensis Callus Extract
Skin ProtectingMelilotus Officinalis Extract
AstringentFoeniculum Vulgare Callus Culture Extract
Skin ConditioningPanax Quinquefolius Root Extract
AstringentMelissa Officinalis Seed Oil
Skin Conditioning
Simmondsia Chinensis Seed Oil
Emollient
Tocopheryl Acetate
Antioxidant
Centella Asiatica Extract
Cleansing
Equisetum Arvense Extract
AstringentGeranium Maculatum Extract
TonicTaraxacum Officinale Extract
Skin ConditioningHydroxyethyl Ethylcellulose
EmulsifyingCarrageenan
Ethylhexylglycerin
Skin ConditioningSodium Benzoate
Masking
Potassium Sorbate
Preservative
Water, Hamamelis Virginiana Water, Cassia Angustifolia Seed Polysaccharide, Alpha-Arbutin, Glycerin, Aloe Barbadensis Leaf Juice, Ganoderma Lucidum Extract, Dimethyl Sulfone, Arctostaphylos Uva Ursi Leaf Extract, Curcuma Longa Root Extract, Glycolic Acid, Salix Alba Bark Extract, Pimpinella Anisum Extract, Cochlearia Armoracia Root Extract, Glycyrrhiza Glabra Root Extract, Schisandra Chinensis Callus Extract, Melilotus Officinalis Extract, Foeniculum Vulgare Callus Culture Extract, Panax Quinquefolius Root Extract, Melissa Officinalis Seed Oil, Simmondsia Chinensis Seed Oil, Tocopheryl Acetate, Centella Asiatica Extract, Equisetum Arvense Extract, Geranium Maculatum Extract, Taraxacum Officinale Extract, Hydroxyethyl Ethylcellulose, Carrageenan, Ethylhexylglycerin, Sodium Benzoate, Potassium Sorbate
Water
Skin ConditioningButylene Glycol
Humectant
Niacinamide
Smoothing
Panthenol
Skin Conditioning
Tranexamic Acid
Astringent
1,2-Hexanediol
Skin ConditioningNeopentyl Glycol Dicaprate
EmollientCaprylic/Capric Triglyceride
MaskingSorbitol
Humectant
Vaccinium Macrocarpon Fruit Extract
AstringentChondrus Crispus Extract
Skin Conditioning
Butyrospermum Parkii Butter
Skin Conditioning
Saccharum Officinarum Extract
MoisturisingAlpha-Arbutin
Antioxidant
Bifida Ferment Lysate
Skin Conditioning
Sodium Hyaluronate
Humectant
Azadirachta Indica Leaf Extract
Skin ConditioningOcimum Sanctum Leaf Extract
Skin ConditioningMelaleuca Alternifolia Leaf Extract
Perfuming
Curcuma Longa Root Extract
Masking
Charcoal Extract
Skin ConditioningWool Extract
Skin ConditioningPentylene Glycol
Skin ConditioningGlycerin
Humectant
3-O-Ethyl Ascorbic Acid
Skin Conditioning
Bisabolol
Masking
Tromethamine
BufferingEthylhexylglycerin
Skin ConditioningAdenosine
Skin Conditioning
Hydrogenated Lecithin
EmulsifyingAllantoin
Skin Conditioning
Glutathione
Ceramide NP
Skin Conditioning
Beta-Glucan
Skin Conditioning
Dipotassium Glycyrrhizate
Humectant
Tocopherol
Antioxidant
Ascorbic Acid
Antioxidant
Ascorbyl Glucoside
Antioxidant
Tocopheryl Acetate
Antioxidant
Hydroxypropyl Cyclodextrin
MaskingUbiquinone
Antioxidant
Thioctic Acid
Antioxidant
Potassium Hydroxide
BufferingBehenyl Alcohol
Emollient
Carbomer
Emulsion StabilisingXanthan Gum
EmulsifyingDisodium EDTA
Water, Butylene Glycol, Niacinamide, Panthenol, Tranexamic Acid, 1,2-Hexanediol, Neopentyl Glycol Dicaprate, Caprylic/Capric Triglyceride, Sorbitol, Vaccinium Macrocarpon Fruit Extract, Chondrus Crispus Extract, Butyrospermum Parkii Butter, Saccharum Officinarum Extract, Alpha-Arbutin, Bifida Ferment Lysate, Sodium Hyaluronate, Azadirachta Indica Leaf Extract, Ocimum Sanctum Leaf Extract, Melaleuca Alternifolia Leaf Extract, Curcuma Longa Root Extract, Charcoal Extract, Wool Extract, Pentylene Glycol, Glycerin, 3-O-Ethyl Ascorbic Acid, Bisabolol, Tromethamine, Ethylhexylglycerin, Adenosine, Hydrogenated Lecithin, Allantoin, Glutathione, Ceramide NP, Beta-Glucan, Dipotassium Glycyrrhizate, Tocopherol, Ascorbic Acid, Ascorbyl Glucoside, Tocopheryl Acetate, Hydroxypropyl Cyclodextrin, Ubiquinone, Thioctic Acid, Potassium Hydroxide, Behenyl Alcohol, Carbomer, Xanthan Gum, Disodium EDTA
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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 WaterAlpha-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-ArbutinGlycerin 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 GlycerinCurcuma Longa Root Extract is from the spice, turmeric. Besides being a healthy and delicious spice, turmeric also has plenty of skincare benefits. It has anti-inflammatory, antioxidant, and anti-microbial properties.
Turmeric contains curcumin, an antioxidant. Antioxidants help neutralize unstable free-radical molecules. Free-radical molecules may damage your skin's cells and DNA. Curcumin may help with anti-aging.
Curcumin also has anti-inflammatory properties and can help soothe skin and reduce irritation. On top of that, curcumin has been shown to help prevent hyperpigmentation from sun damage.
The anti-microbial property of turmeric can make it effective in treating acne. This property has also been shown to help regulate the production of sebum.
Learn more about Curcuma Longa Root ExtractTocopheryl 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 AcetateEthylhexylglycerin (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.
Ingredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
SeoulCeuticals Ultra Brightening Kojic Acid Serum 31 ingredients
Numbuzin No.5 Vitamin Concentrated Serum 47 ingredients
Reviews
Here's what our community thinks
SeoulCeuticals Ultra Brightening Kojic Acid Serum 31 ingredients
Numbuzin No.5 Vitamin Concentrated Serum 47 ingredients
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
This is an okay serum for brightening. I have dry, eczema and rosacea skin and didn’t have any issues with breakouts or irritation BUT I didn’t see any big improvement either and used for about 3 months. I found that it left a slightly tacky feeling no matter how long I left between steps in my routine. No smells or fragrances so that was also a plus.
