Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum Versus Differin Adapalene Gel 0.1% Acne Treatment
This anti-aging serum is formulated around Retinol and Niacinamide to soften the look of wrinkles and refine skin texture.
This acne treatment is formulated around Adapalene to clear breakouts and refine skin texture.
What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningGlycerin
Humectant
Butylene Glycol
Humectant
Pentylene Glycol
Skin Conditioning
Niacinamide
Smoothing
Cetyl Alcohol
Emollient
Isohexadecane
EmollientIsononyl Isononanoate
EmollientDiisopropyl Sebacate
Emollient2-Oleamido-1,3-Octadecanediol
Skin Conditioning4-T-Butylcyclohexanol
Masking
Acetyl Dipeptide-1 Cetyl Ester
Skin Conditioning
Adenosine
Skin Conditioning
Ceramide NP
Skin Conditioning
Hydroxypalmitoyl Sphinganine
Skin Conditioning
Lauroyl Lysine
Skin Conditioning
Octyldodecanol
Emollient
Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
Antioxidant
Sodium Chloride
MaskingSodium Hyaluronate
Humectant
Sodium Hydroxide
BufferingTrisodium Ethylenediamine Disuccinate
ChelatingRetinol
Skin Conditioning
Tocopherol
Antioxidant
Dicaprylyl Ether
Emollient
Ammonium Polyacryloyldimethyl Taurate
Emulsion StabilisingBehenyl Alcohol
Emollient
Caprylyl Glycol
Emollient
Carbomer
Emulsion StabilisingCetearyl Alcohol
Emollient
Cetearyl Glucoside
Emulsifying
Glycine Soja Oil
Emollient
Helianthus Annuus Seed Oil
Emollient
Hydroxyethylcellulose
Emulsion StabilisingLecithin
Emollient
Phenethyl Alcohol
MaskingPoloxamer 188
EmulsifyingPolycaprolactone
StabilisingSorbitan Laurate
Emulsifying
Steareth-100
Gel FormingCI 40800
Cosmetic ColorantChlorphenesin
Antimicrobial
Phenoxyethanol
Preservative
Water, Glycerin, Butylene Glycol, Pentylene Glycol, Niacinamide, Cetyl Alcohol, Isohexadecane, Isononyl Isononanoate, Diisopropyl Sebacate, 2-Oleamido-1,3-Octadecanediol, 4-T-Butylcyclohexanol, Acetyl Dipeptide-1 Cetyl Ester, Adenosine, Ceramide NP, Hydroxypalmitoyl Sphinganine, Lauroyl Lysine, Octyldodecanol, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Sodium Chloride, Sodium Hyaluronate, Sodium Hydroxide, Trisodium Ethylenediamine Disuccinate, Retinol, Tocopherol, Dicaprylyl Ether, Ammonium Polyacryloyldimethyl Taurate, Behenyl Alcohol, Caprylyl Glycol, Carbomer, Cetearyl Alcohol, Cetearyl Glucoside, Glycine Soja Oil, Helianthus Annuus Seed Oil, Hydroxyethylcellulose, Lecithin, Phenethyl Alcohol, Poloxamer 188, Polycaprolactone, Sorbitan Laurate, Steareth-100, CI 40800, Chlorphenesin, Phenoxyethanol
Reviews
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Carbomer is a synthetic thickening and gelling agent. It's basically the ingredient that gives a lot of serums, gels, creams, and sunscreens their smooth, non-sticky texture.
Although legally permitted at very high levels, carbomers are normally used at concentrations below 1%.
It also needs to be neutralized to actually thicken, and because it is a large molecule, it doesn't really penetrate the skin barrier.
Allergy-wise, the risk is very low. Clinical studies show carbomers have low potential for skin irritation/sensitization even at concentrations up to 100%.
A 2024 UK study patch-tested 1,302 patients and found true allergy to the parent group of carbomer to be rare with no confirmed relevant reactions.
Learn more about CarbomerSodium 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.
Learn more about Sodium HydroxideWater. 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!
Learn more about Water
