Here's our complete breakdown comparing the ingredients, attributes, and more of COSRX The Niacinamide 15 Serum versus Earth Rhythm 10% Niacinamide + Phyto Ceramides + Hyaluronic Acid Serum .
Published on December 10, 2023
Overview
What they are
These products are both reef safe serums. They have a total of 5 ingredients in common
Cool Features
They both contain niacinamide
Suited For
They're both likely to be good for fighting acne, brightening skin, sensitive skin, oily skin, reducing pores and dark spots
Free From
They both do not contain any harsh alcohols, common allergens, fragrances, oils, parabens or sulfates
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that need an update? Let us know.
Price
Ingredient Info
COSRX The Niacinamide 15 Serum 15 ingredients
Earth Rhythm 10% Niacinamide + Phyto Ceramides + Hyaluronic Acid Serum 16 ingredients
Alcohol Free
This product is free of harsh alcohols 🎉
Silicon Free
This product is free of silicons 🎉
Fragrance Free
This product is free of fragrances 🎉
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Oil Free
This product is free of oils 🎉
Malassezia Safe
This product is free of malassezia feeding ingredients 🎉
Reef Safe
This product is free of ingredients that damage reefs 🎉
EU Allergen Free
This product is free of EU allergens 🎉
Non Vegan
This product is not vegan 😥
Cruelty Free
This product is cruelty-free 🎉
Alcohol Free
This product is free of harsh alcohols 🎉
Contains Silicon
Ingredients in this product that are types of silicon:
Fragrance Free
This product is free of fragrances 🎉
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Oil Free
This product is free of oils 🎉
Not Malassezia Safe
Ingredients in this product that are not malassezia safe:
Reef Safe
This product is free of ingredients that damage reefs 🎉
EU Allergen Free
This product is free of EU allergens 🎉
Non Vegan
This product is not vegan 😥
Not Cruelty Free
This product is not cruelty-free 😥
At a glance
Click on any of the items below to learn more
COSRX The Niacinamide 15 Serum 15 ingredients
Earth Rhythm 10% Niacinamide + Phyto Ceramides + Hyaluronic Acid Serum 16 ingredients
Notable Ingredients
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
Benefits
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
Notable Ingredients
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
Benefits
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
Concerns
This product contains 1 ingredient that may have this attribute:
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Join SkinSortIngredients Compared
Ingredients that are highlighted in purple are present in both products.
COSRX The Niacinamide 15 Serum 15 ingredients
Earth Rhythm 10% Niacinamide + Phyto Ceramides + Hyaluronic Acid Serum 16 ingredients
Ingredients Side-by-side
Ingredients that are highlighted in purple are present in both products.
Learn more about what what Com. / Irr. ratings are
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. Talk about multi-purpose! If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterCOSRX The Niacinamide 15 Serum contains this as ingredient number 1.
Earth Rhythm 10% Niacinamide + Phyto Ceramides + Hyaluronic Acid Serum contains this as ingredient number 1.
Niacinamide has emerged as an all-star ingredient due to its many benefits.
It is known to treat acne by reducing inflammation. It also helps fade dark-spots and strengthen the skin by promoting the growth of the ceramide barrier.
Other benefits include smoothing wrinkles and minimizing redness.
The cherry on top? Niacinamide can also help build keratin, a protein that keeps skin firm.
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.
Niacinamide can be mixed with other ingredients to boost benefits. For instance, it has shown to be effective when used with copper, folic acid, and zinc to treat acne.
Learn more about NiacinamideCOSRX The Niacinamide 15 Serum contains this as ingredient number 3.
Earth Rhythm 10% Niacinamide + Phyto Ceramides + Hyaluronic Acid Serum contains this as ingredient number 2.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
- It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
- It is a humectant, which means that it helps attract moisture into the skin.
- It helps improve product application.
Overall, Butylene Glycol is a safe and well-rounded ingredient. It is unlikely to irritate skin, and works well with pretty much all other ingredients.
COSRX The Niacinamide 15 Serum contains this as ingredient number 4.
Earth Rhythm 10% Niacinamide + Phyto Ceramides + Hyaluronic Acid Serum contains this as ingredient number 6.
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 GumCOSRX The Niacinamide 15 Serum contains this as ingredient number 9.
Earth Rhythm 10% Niacinamide + Phyto Ceramides + Hyaluronic Acid Serum contains this as ingredient number 16.
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.
COSRX The Niacinamide 15 Serum contains this as ingredient number 12.
Earth Rhythm 10% Niacinamide + Phyto Ceramides + Hyaluronic Acid Serum contains this as ingredient number 18.
Here's what our community thinks of the ingredients in these two products.
COSRX The Niacinamide 15 Serum 15 ingredients
Earth Rhythm 10% Niacinamide + Phyto Ceramides + Hyaluronic Acid Serum 16 ingredients
Usage
Here's some more info on how this product is used by our community.
When to use
COSRX The Niacinamide 15 Serum 15 ingredients
Earth Rhythm 10% Niacinamide + Phyto Ceramides + Hyaluronic Acid Serum 16 ingredients
Reviews
Here's what our community thinks
COSRX The Niacinamide 15 Serum 15 ingredients
ChienYun_CY
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...
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. I decided to repurchase this serum, and almost immediately, my scars cleared and had reduced inflammation on new cystic acne. It also helped to control sebum production and I have lesser acne growth. One of the products I cannot live without.
Earth Rhythm 10% Niacinamide + Phyto Ceramides + Hyaluronic Acid Serum 16 ingredients
Alternatives
Our Dupe Finder has found 50 potential alternatives that have similar ingredients to COSRX The Niacinamide 15 Serum.
See 50 alternativesOur Dupe Finder has found 50 potential alternatives that have similar ingredients to Earth Rhythm 10% Niacinamide + Phyto Ceramides + Hyaluronic Acid Serum.
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