Rilastil Acnestil PB Soothing Sebum-Normalising Gel Versus La Roche-Posay Mela B3 Dark Spot Serum With Melasyl+Niacinamide
This calming treatment is formulated around Ectoin and Alpha-Glucan Oligosaccharide to calm redness and strengthen the skin barrier.
This brightening serum is formulated around Niacinamide and 2-Mercaptonicotinoyl Glycine to fade the look of dark spots and refine skin texture.
What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningPentylene Glycol
Skin Conditioning
Glycerin
Humectant
Ectoin
Skin Conditioning
Alpha-Glucan Oligosaccharide
Cleansing
Chondrus Crispus Powder
Abrasive
Lactobacillus Ferment
Skin Conditioning
Hydrolyzed Yeast Protein
Skin ConditioningButylene Glycol
Humectant
Hydroxyethylcellulose
Emulsion StabilisingMannitol
Humectant
Xanthan Gum
EmulsifyingLactic Acid
Buffering
Sodium Benzoate
Masking
Potassium Sorbate
Preservative
Water
Skin ConditioningDimethicone
Emollient
Niacinamide
Smoothing
Glycerin
Humectant
Propylene Glycol
Humectant
Polysilicone-11
Silica
Abrasive
Bis-PEG/PPG-16/16 PEG/PPG-16/16 Dimethicone
Emollient
Cystoseira Tamariscifolia Extract
Skin Conditioning2-Mercaptonicotinoyl Glycine
Skin Conditioning
PEG-20 Methyl Glucose Sesquistearate
Emulsifying
Sodium Hyaluronate
Humectant
Sodium Hydroxide
BufferingSodium Thiosulfate
Carnosine
Skin Conditioning
Poloxamer 338
EmulsifyingAmmonium Polyacryloyldimethyl Taurate
Emulsion StabilisingDipotassium Glycyrrhizate
Humectant
Caprylic/Capric Triglyceride
Masking
Capryloyl Salicylic Acid
Exfoliating
Caprylyl Glycol
Emollient
Citric Acid
Buffering
Trisodium Ethylenediamine Disuccinate
Xanthan Gum
EmulsifyingPentylene Glycol
Skin Conditioning
Octyldodecanol
Emollient
Retinyl Palmitate
Skin Conditioning
Tocopherol
Antioxidant
Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
Antioxidant
Phenoxyethanol
Preservative
CI 17200
Cosmetic ColorantParfum
Masking
Water, Dimethicone, Niacinamide, Glycerin, Propylene Glycol, Polysilicone-11, Silica, Bis-PEG/PPG-16/16 PEG/PPG-16/16 Dimethicone, Cystoseira Tamariscifolia Extract, 2-Mercaptonicotinoyl Glycine, PEG-20 Methyl Glucose Sesquistearate, Sodium Hyaluronate, Sodium Hydroxide, Sodium Thiosulfate, Carnosine, Poloxamer 338, Ammonium Polyacryloyldimethyl Taurate, Dipotassium Glycyrrhizate, Caprylic/Capric Triglyceride, Capryloyl Salicylic Acid, Caprylyl Glycol, Citric Acid, Trisodium Ethylenediamine Disuccinate, Xanthan Gum, Pentylene Glycol, Octyldodecanol, Retinyl Palmitate, Tocopherol, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Phenoxyethanol, CI 17200, Parfum
Reviews
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.
Learn more about GlycerinPentylene Glycol (1,2-pentanediol) is a multitasking little diol with three main roles in a formula:
Research on alkanediols (the family pentylene glycol belongs to) show they work by disrupting microbial cell membranes. This disruption helps the primary preservative system in a product work more effectively at lower doses.
On the safety side, the Cosmetic Ingredient Review Expert Panel has concluded this ingredient to be safe as used in current cosmetic practices + concentrations.
Typical use levels in a formula run about 1-5%.
Learn more about Pentylene GlycolWater. 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 WaterXanthan 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 Gum
