Skin science article
La Roche-Posay Effaclar Duo[+] Unifiant Versus The INKEY List C-50 Blemish Night Treatment
La Roche-Posay Effaclar Duo[+] Unifiant Versus The INKEY List C-50 Blemish Night Treatment This acne moisturizer is formulated around Niacinamide and Salicylic Acid to clear breakouts and balance excess oil. This acne treatment is formulated around Sodium Asco
La Roche-Posay Effaclar Duo[+] Unifiant Versus The INKEY List C-50 Blemish Night Treatment
This acne moisturizer is formulated around Niacinamide and Salicylic Acid to clear breakouts and balance excess oil.
This acne treatment is formulated around Sodium Ascorbyl Phosphate and Salicylic Acid to clear breakouts and refine skin texture.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Glycerin
Dimethicone
Isocetyl Stearate
Niacinamide
Isopropyl Lauroyl Sarcosinate
Ammonium Polyacryloyldimethyl Taurate
Methyl Methacrylate Crosspolymer
T-Butyl Alcohol
Sodium Hydroxide
Oleic Acid
Salicylic Acid
Silica Silylate
Poloxamer 338
Nylon-12
Polysorbate 80
Zinc PCA
Linoleic Acid
Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
Isohexadecane
2-Oleamido-1,3-Octadecanediol
Octanediol
Capryloyl Salicylic Acid
Caprylyl Glycol
Piroctone Olamine
Myristyl Myristate
Acrylamide/Sodium Acryloyldimethyltaurate Copolymer
Parfum
Sorbitan Oleate
Disodium EDTA
Potassium Cetyl Phosphate
BHT
Glyceryl Stearate Se
CI 77891
CI 77491
CI 77492
CI 77499
Mica
Water, Glycerin, Dimethicone, Isocetyl Stearate, Niacinamide, Isopropyl Lauroyl Sarcosinate, Ammonium Polyacryloyldimethyl Taurate, Methyl Methacrylate Crosspolymer, T-Butyl Alcohol, Sodium Hydroxide, Oleic Acid, Salicylic Acid, Silica Silylate, Poloxamer 338, Nylon-12, Polysorbate 80, Zinc PCA, Linoleic Acid, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Isohexadecane, 2-Oleamido-1,3-Octadecanediol, Octanediol, Capryloyl Salicylic Acid, Caprylyl Glycol, Piroctone Olamine, Myristyl Myristate, Acrylamide/Sodium Acryloyldimethyltaurate Copolymer, Parfum, Sorbitan Oleate, Disodium EDTA, Potassium Cetyl Phosphate, BHT, Glyceryl Stearate Se, CI 77891, CI 77491, CI 77492, CI 77499, Mica
Propanediol
Sodium Ascorbyl Phosphate
Ammonium Acryloyldimethyltaurate/Vp Copolymer
Phenoxyethanol
Caprylyl/Capryl Glucoside
Xanthan Gum
Madecassoside
Ethylhexylglycerin
Hydroxyacetophenone
Sodium Gluconate
Sodium Metabisulfite
Lecithin
Ascorbyl Palmitate
Nelumbo Nucifera Flower Extract
Nymphaea Coerulea Flower Extract
Tocopherol
Helianthus Annuus Seed Oil
Water, Propanediol, Sodium Ascorbyl Phosphate, Salicylic Acid, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Phenoxyethanol, Caprylyl/Capryl Glucoside, Xanthan Gum, Glycerin, Sodium Hydroxide, Madecassoside, Ethylhexylglycerin, Hydroxyacetophenone, Sodium Gluconate, Sodium Metabisulfite, Lecithin, Ascorbyl Palmitate, Nelumbo Nucifera Flower Extract, Nymphaea Coerulea Flower Extract, Tocopherol, Helianthus Annuus Seed Oil
Reviews
Alternatives
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.
Topically, glycerin does several things at once:
Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3.
Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin.
This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products.
Just know very high concentrations (>40%) can feel tacky in low humidity.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Salicylic Acid (also known as beta hydroxy acid or BHA) is a well-known ingredient for treating skin that struggles with acne and clogged pores. It exfoliates both the skin's surface and deep within the pores to help clear out buildup, control oil, and reduce inflammation.
Unlike AHAs (alpha hydroxy acids), salicylic acid is oil-soluble. This allows it to penetrate into pores which makes it especially effective for treating blackheads and preventing future breakouts.
Salicylic acid is also known for its soothing properties. It has a similar structure to aspirin and can calm inflamed or irritated skin, making it a good option for acne-prone skin that is also sensitive.
Concentrations of 0.5-2% are recognized by the U.S. FDA as an over-the-counter topical acne product.
It can cause irritation and/or dryness if one's skin already has a compromised moisture barrier, so it's best to focus on repairing that before introducing this ingredient into your routine.
While salicylic acid does not increase sun sensitivity, it’s still important to wear sunscreen daily to protect your skin.
If you are looking for the ingredient called BHA or Butylated Hydroxyanisole, click here.
Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.
In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.
Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated.
"Alkaline" refers to a high pH level. A low pH level would be considered acidic.
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. Remember to stay hydrated!