Here's our complete breakdown comparing the ingredients, attributes, and more of Principia Retinol versus COSRX The Retinol 0.1 Cream .
Published on January 15, 2023
Overview
What they are
These products are both reef safe . They have a total of 4 ingredients in common
Cool Features
They both contain retinoid and Vitamin E
Suited For
They're both likely to be good for fighting acne, anti aging, brightening skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any harsh alcohols, common allergens, fragrances, 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.
Serum
Serums are highly concentrated with ingredients to provide skin with benefits. They should be used after cleansing and before moisturizing.
Facial Treatment
Facial treatments are specially designed to treat a skin concern. Acne treatments and anti-aging products are common examples of facial treatments.
Ingredient Info
Principia Retinol 16 ingredients
COSRX The Retinol 0.1 Cream 51 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 🎉
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 😥
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 🎉
Contains Oils
Ingredients in this product that are types of oil:
Not Malassezia Safe
Ingredients in this product that are not malassezia safe:
- Cetearyl Alcohol
- Butyrospermum Parkii Butter
- Glycine Soja Oil
- Helianthus Annuus Seed Oil
- Polyglyceryl-10 Stearate
- Glyceryl Stearate
- Oryza Sativa Bran Wax
- Stearic Acid
- Polyglyceryl-3 Methylglucose Distearate
- Palmitic Acid
- Sorbitan Isostearate
- Elaeis Guineensis Oil
- Myristic Acid
- Lauric Acid
- Limnanthes Alba Seed Oil
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 🎉
At a glance
Click on any of the items below to learn more
Principia Retinol 16 ingredients
COSRX The Retinol 0.1 Cream 51 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 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 1 ingredient that may have this attribute:
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Concerns
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:
Notable Ingredients
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 5 ingredients that may have this attribute:
Benefits
This product contains 4 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 3 ingredients that may have this attribute:
This product contains 3 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
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This product contains 6 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 6 ingredients that may have this attribute:
Concerns
This product contains 1 ingredient that may have this attribute:
This product contains 6 ingredients that may have this attribute:
This product contains 3 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:
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Join SkinSortIngredients Compared
Ingredients that are highlighted in purple are present in both products.
Principia Retinol 16 ingredients
COSRX The Retinol 0.1 Cream 51 ingredients
Water • Retinol • Polyacrylate Crosspolymer-6 • Sodium Gluconate • Propanediol • C15-19 Alkane • Arachidyl Alcohol • Behenyl Alcohol • Arachidyl Glucoside • Tocopheryl Acetate • Polysorbate 20 • BHA • Sodium Diethylenetriamine Pentamethylene Phosphonate • Sodium Gluceptate • Phenoxyethanol • Caprylyl Glycol
Water • Caprylic/Capric Triglyceride • Propanediol • Glycerin • Tocopheryl Acetate • Cetearyl Alcohol • Butyrospermum Parkii Butter • Panthenol • Trehalose • Glycine Soja Oil • Ammonium Acryloyldimethyltaurate/Vp Copolymer • Dimethicone • Glyceryl Polymethacrylate • Helianthus Annuus Seed Oil • Polyglyceryl-10 Stearate • Hydrogenated Lecithin • Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer • Carbomer • Tromethamine • Glyceryl Stearate • Polysilicone-11 • Sodium Sulfite • Tocopherol • Daucus Carota Sativa Root Extract • Allantoin • Glyceryl Caprylate • Oryza Sativa Bran Wax • Retinol • Tocotrienols • Stearic Acid • Polyglyceryl-3 Methylglucose Distearate • Palmitic Acid • Disodium EDTA • Ethylhexylglycerin • Adenosine • Sorbitan Isostearate • Elaeis Guineensis Oil • BHT • Beta-Carotene • Myristic Acid • Lauric Acid • 3-O-Ethyl Ascorbic Acid • Ascorbic Acid • Glutathione • Limnanthes Alba Seed Oil • Sodium Hyaluronate • 1,2-Hexanediol • Hydrolyzed Hyaluronic Acid • Sodium Hyaluronate Crosspolymer • Hyaluronic Acid • Sodium Acetylated Hyaluronate
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 WaterPrincipia Retinol contains this as ingredient number 1.
COSRX The Retinol 0.1 Cream contains this as ingredient number 1.
Retinol is a gold-standard ingredient for anti-aging. It is a form of Vitamin A and belongs to the class of retinoids that also includes tretinoin.
Why is retinol famous?
It has the most scientific studies backing up its skin benefits out of all the non-prescription ingredients.
Retinol is proven to:
This is why retinol is effective at removing wrinkles, fading dark spots, treating acne, and reducing the appearance of pores.
Studies show retinol is less effective when exposed to UV. Be sure to look for appropriate packaging to keep your retinol potent (similar to Vitamin C).
Using retinol or any retinoids will increase sun-sensitivity in the first few months. Though studies show retinoids increase your skin's natural SPF with continuous use, it is best to always wear sunscreen and sun-protection.
We recommend speaking with a medical professional about using this ingredient during pregnancy.
Retinol may cause irritation in some people, so be sure to patch test. Experts recommend 'ramping up' retinol use: start using this ingredient once a week and work up to using it daily.
Read about Tretinoin
Learn more about RetinolPrincipia Retinol contains this as ingredient number 2.
COSRX The Retinol 0.1 Cream contains this as ingredient number 28.
Propanediol helps absorb ingredients into your skin, boosting their benefits. It can act as an emollient, making your skin softer. Propanediol can help products last longer by boosting the properties of preservatives within the formulation.
Propanediol is not likely to cause sensitivity and considered safe to use.
It is derived from corn or petroleum with a clear color and no scent.
Learn more about PropanediolPrincipia Retinol contains this as ingredient number 5.
COSRX The Retinol 0.1 Cream contains this as ingredient number 3.
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 AcetatePrincipia Retinol contains this as ingredient number 10.
COSRX The Retinol 0.1 Cream contains this as ingredient number 5.
Here's what our community thinks of the ingredients in these two products.
Principia Retinol 16 ingredients
COSRX The Retinol 0.1 Cream 51 ingredients
Usage
Here's some more info on how this product is used by our community.
When to use
Principia Retinol 16 ingredients
COSRX The Retinol 0.1 Cream 51 ingredients
Reviews
Here's what our community thinks
Principia Retinol 16 ingredients
COSRX The Retinol 0.1 Cream 51 ingredients
AshN.
(Started Dec 2023) This was a bit of an impulse buy with a friend, but I'm honestly glad I got it! I have previous experience with using retinoids...
(Started Dec 2023) This was a bit of an impulse buy with a friend, but I'm honestly glad I got it! I have previous experience with using retinoids (specifically from The Ordinary Line) and wanted to try something a bit stronger. On Amazon it is priced at $13, so I would say this is a wonderful budget buy. The formulation is very gentle given the strength and I experienced no problems with irritation! My skin actually ended up feeling smoother and softer the following morning with this. I would highly recommend this as a starter Retinol. Planning to get the .3 formulation after I go through another one.
sarahabma
Wonderful beginner retinol
Ny first ever retinol but 2nd time using a retinoid. for context I have highly acne-prone skin.
I've been using this...
Wonderful beginner retinol
Ny first ever retinol but 2nd time using a retinoid. for context I have highly acne-prone skin.
I've been using this every other night for a couple weeks now and I see that my acne is healing much faster than usual, i.e. less redness and irritation on acne that I would usually experience.
Though there are ingredients rated by SkinSort as not good for acne-prone skin (Cetearyl Alcohol, Myristic Acid and Lauric Acid), I have not noticed a negative reaction whatsoever. So, I would still recommend this product for other retinol beginners, especially those with acne-prone skin like me.
Alternatives
Our Dupe Finder has found 21 potential alternatives that have similar ingredients to Principia Retinol.
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