COSRX The Niacinamide 15 Serum Versus Garnier 3.5% Vitamin C, Niacinamide, Salicylic Acid, Brightening & Anti Dark Spot Serum
Updated on August 23, 2024
Overview
What they are
These products are both cruelty-free, fungal acne (malassezia) safe, and reef safe serums. They have a total of 6 ingredients in common
Cool Features
They both contain niacinamide 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 and dark spots
Free From
They both do not contain any oils, 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
COSRX The Niacinamide 15 Serum 15 ingredients
Garnier 3.5% Vitamin C, Niacinamide, Salicylic Acid, Brightening & Anti Dark Spot Serum 35 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
COSRX The Niacinamide 15 Serum 15 ingredients
Garnier 3.5% Vitamin C, Niacinamide, Salicylic Acid, Brightening & Anti Dark Spot Serum 35 ingredients
Key Ingredients
Benefits
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningGlycerin
Humectant
Alcohol
Antimicrobial
Dipropylene Glycol
MaskingButylene Glycol
Humectant
Niacinamide
Smoothing
PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin
HumectantCeramide AP
Skin Conditioning
Hydroxyethylpiperazine Ethane Sulfonic Acid
BufferingBis-PEG-18 Methyl Ether Dimethyl Silane
EmollientIsononyl Isononanoate
Emollient3-O-Ethyl Ascorbic Acid
Skin Conditioning
Citrus Junos Fruit Extract
Skin ConditioningCitrus Limon Fruit Extract
Masking
Sodium Citrate
BufferingSodium Hyaluronate
Humectant
Adenosine
Skin Conditioning
Phenylethyl Resorcinol
Antioxidant
Ammonium Polyacryloyldimethyl Taurate
Emulsion StabilisingDisodium EDTA
Hydrogenated Lecithin
Emulsifying
Citric Acid
Buffering
Maltodextrin
Absorbent
Xanthan Gum
EmulsifyingOxothiazolidinecarboxylic Acid
Skin ConditioningTocopherol
Antioxidant
Tocopheryl Acetate
Antioxidant
Salicylic Acid
Masking
Phenoxyethanol
Preservative
Linalool
Perfuming
Geraniol
Perfuming
Limonene
Perfuming
Benzyl Alcohol
Perfuming
Benzyl Salicylate
Perfuming
Parfum
Masking
Water, Glycerin, Alcohol, Dipropylene Glycol, Butylene Glycol, Niacinamide, PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin, Ceramide AP, Hydroxyethylpiperazine Ethane Sulfonic Acid, Bis-PEG-18 Methyl Ether Dimethyl Silane, Isononyl Isononanoate, 3-O-Ethyl Ascorbic Acid, Citrus Junos Fruit Extract, Citrus Limon Fruit Extract, Sodium Citrate, Sodium Hyaluronate, Adenosine, Phenylethyl Resorcinol, Ammonium Polyacryloyldimethyl Taurate, Disodium EDTA, Hydrogenated Lecithin, Citric Acid, Maltodextrin, Xanthan Gum, Oxothiazolidinecarboxylic Acid, Tocopherol, Tocopheryl Acetate, Salicylic Acid, Phenoxyethanol, Linalool, Geraniol, Limonene, Benzyl Alcohol, Benzyl Salicylate, Parfum
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 WaterNiacinamide is a multitasking form of vitamin B3 that strengthens the skin barrier, reduces pores and dark spots, regulates oil, and improves signs of aging.
And the best part? It's gentle and well-tolerated by most skin types, including sensitive and reactive skin.
You might have heard of "niacin flush", or the reddening of skin that causes itchiness. Niacinamide has not been found to cause this.
In very rare cases, some individuals may not be able to tolerate niacinamide at all or experience an allergic reaction to it.
If you are experiencing flaking, irritation, and dryness with this ingredient, be sure to double check all your products as this ingredient can be found in all categories of skincare.
When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.
When you apply niacinamide to your skin, your body converts it into nicotinamide adenine dinucleotide (NAD). NAD is an essential coenzyme that is already found in your cells as "fuel" and powers countless biological processes.
In your skin, NAD helps repair cell damage, produce new healthy cells, support collagen production, strengthen the skin barrier, and fight environmental stressors (like UV and pollution).
Our natural NAD levels start to decline with age, leading to slower skin repair, visible aging, and a weaker skin barrier. By providing your skin niacinamide, you're recharging your skin's NAD levels. This leads to stronger, healthier, and younger looking skin.
Another name for vitamin B3 is nicotinamide. This vitamin is water-soluble and our bodies don't store it. We obtain Vitamin B3 from either food or skincare. Meat, fish, wheat, yeast, and leafy greens contain vitamin B3.
The type of niacinamide used in skincare is synthetically created.
Learn more about NiacinamideButylene 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 GlycolXanthan 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 GumCitric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
As an AHA, Citric Acid removes the top layer of skin cells from the newer layer of skin underneath. This helps skin to remove dark spots and even out skin tone.
If you spot Citric Acid near the end of an ingredient list, it's likely there as a pH adjuster rather than an active ingredient.
Read more about some other popular AHA's here:
Learn more about Citric AcidTocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.
Vitamin E also helps keep your natural skin lipids healthy. Your lipid skin barrier naturally consists of lipids, ceramides, and fatty acids. Vitamin E offers extra protection for your skin’s lipid barrier, keeping your skin healthy and nourished.
Another benefit is a bit of UV protection. Vitamin E helps reduce the damage caused by UVB rays. (It should not replace your sunscreen). Combining it with Vitamin C can decrease sunburned cells and hyperpigmentation after UV exposure.
You might have noticed Vitamin E + C often paired together. This is because it is great at stabilizing Vitamin C. Using the two together helps increase the effectiveness of both ingredients.
There are often claims that Vitamin E can reduce/prevent scarring, but these claims haven't been confirmed by scientific research.
Learn more about TocopherolIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
COSRX The Niacinamide 15 Serum 15 ingredients
Garnier 3.5% Vitamin C, Niacinamide, Salicylic Acid, Brightening & Anti Dark Spot Serum 35 ingredients
Reviews
Here's what our community thinks
COSRX The Niacinamide 15 Serum 15 ingredients
warning!!! this can be SO irritating *if you use it wrong*
do not use with
-ahas
-bhas
-vit c
-other niacinamide products
-start on dry skin first as wet skin absorbs more
tip: sandwich it. i put a little centella ampoule before and after this serum to prevent irritation. if used properly, this serum is a life changer! i struggle with closed comedones and acne scars and this helped Show more
HG acne scar serum
Initially, this serum had helped fade away most of my old acne scars. After while, I thought it didn't do anything more for my new acne growth. So I ditched this serum for about 3 months and tried other new niacinamide products. I REGRET it. Soon after, I got more and more whiteheads and acne. My skin texture becomes uneven and dry. The new acne scars couldn't fade away at all. Show more
Garnier 3.5% Vitamin C, Niacinamide, Salicylic Acid, Brightening & Anti Dark Spot Serum 35 ingredients
Definitely not for sensitive skin
I have combo sensitive skin and it absolutely destroyed my skin barrier. My face was red, tight and burning after second use. It smells like alcohol and have very strong scent. I will never ever use it not even on my neck or arms.
Hate it
My skin isn't even that sensitive, and my forehead was completely ruined. My pores got enormous, then i got an incredible amount of small red pimples or something. I know my skin is kind of sensitive, but this serum was too much. Might work for some people, i know, but for me this was a no-no.
