Skin science article
La Roche-Posay Toleriane Double Repair Face Moisturizer Versus Skinfix Barrier+ Triple Lipid-Peptide Cream
La Roche-Posay Toleriane Double Repair Face Moisturizer Versus Skinfix Barrier+ Triple Lipid-Peptide Cream This barrier-repair moisturizer is formulated around Squalane and Niacinamide to strengthen the skin barrier and hydrate skin. This barrier-repair moistu
La Roche-Posay Toleriane Double Repair Face Moisturizer Versus Skinfix Barrier+ Triple Lipid-Peptide Cream
This barrier-repair moisturizer is formulated around Squalane and Niacinamide to strengthen the skin barrier and hydrate skin.
This barrier-repair moisturizer is formulated around Butyrospermum Parkii Butter and Ceramide NP to strengthen the skin barrier and hydrate skin.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Glycerin
Squalane
Dimethicone
Zea Mays Starch
Niacinamide
Ammonium Polyacryloyldimethyl Taurate
Myristyl Myristate
Stearic Acid
Ceramide NP
Potassium Cetyl Phosphate
Glyceryl Stearate Se
Sodium Hydroxide
Myristic Acid
Palmitic Acid
Capryloyl Glycine
Caprylyl Glycol
Xanthan Gum
Water, Glycerin, Squalane, Dimethicone, Zea Mays Starch, Niacinamide, Ammonium Polyacryloyldimethyl Taurate, Myristyl Myristate, Stearic Acid, Ceramide NP, Potassium Cetyl Phosphate, Glyceryl Stearate Se, Sodium Hydroxide, Myristic Acid, Palmitic Acid, Capryloyl Glycine, Caprylyl Glycol, Xanthan Gum
Caprylic/Capric Triglyceride
Butyrospermum Parkii Butter
Olus Oil
Cetyl Lactate
Propanediol
C12-16 Alcohols
Caprylyl Caprylate/Caprate
Jojoba Oil/Macadamia Seed Oil Esters
Glyceryl Stearate Citrate
Hydrogenated Lecithin
Oryza Sativa Bran Extract
Dilinoleic Acid/Propanediol Copolymer
Squalene
Ophiopogon Japonicus Root Extract
Phytosteryl Sunflowerseedate
Glycine Soja Extract
Pentylene Glycol
Ceramide AP
Ceramide EOP
Hydrolyzed Rice Protein
Chondrus Crispus Extract
Hydrogenated Vegetable Glycerides
Helianthus Annuus Extract
Sodium Hyaluronate
Citric Acid
Phytosteryl Macadamiate
Tocopherol
Rosmarinus Officinalis Leaf Extract
Aloe Barbadensis Leaf Juice
Trisodium Ethylenediamine Disuccinate
Phytosterols
Sodium Lauroyl Lactylate
Gluconolactone
Phenethyl Alcohol
Phytosphingosine
Cholesterol
Carbomer
Potassium Sorbate
Ethylhexylglycerin
Sodium Benzoate
Phenoxyethanol
Water, Caprylic/Capric Triglyceride, Glycerin, Butyrospermum Parkii Butter, Olus Oil, Cetyl Lactate, Propanediol, C12-16 Alcohols, Caprylyl Caprylate/Caprate, Jojoba Oil/Macadamia Seed Oil Esters, Glyceryl Stearate Citrate, Palmitic Acid, Hydrogenated Lecithin, Oryza Sativa Bran Extract, Dilinoleic Acid/Propanediol Copolymer, Squalene, Ophiopogon Japonicus Root Extract, Xanthan Gum, Phytosteryl Sunflowerseedate, Glycine Soja Extract, Pentylene Glycol, Ceramide NP, Ceramide AP, Ceramide EOP, Hydrolyzed Rice Protein, Chondrus Crispus Extract, Hydrogenated Vegetable Glycerides, Helianthus Annuus Extract, Sodium Hyaluronate, Citric Acid, Phytosteryl Macadamiate, Tocopherol, Rosmarinus Officinalis Leaf Extract, Aloe Barbadensis Leaf Juice, Trisodium Ethylenediamine Disuccinate, Phytosterols, Sodium Lauroyl Lactylate, Gluconolactone, Phenethyl Alcohol, Phytosphingosine, Cholesterol, Carbomer, Potassium Sorbate, Ethylhexylglycerin, Sodium Benzoate, Phenoxyethanol
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.
Ceramide NP (formerly known as Ceramide 3) is one of the skin's naturally occurring lipids.
Since ceramides are the major lipid components of the skin, they are crucial for maintaining skin barrier and hydration. Ceramide NP most closely mirrors the dominant kind in human skin amongst ceramide subtypes.
This ceramide works by slotting into gaps within the stratum corneum's lipid matrix to limit trans-epidermal water loss (TEWL) and shield the skin against external irritants.
A study with 312 patients found that using a ceramide-containing routine for 4 weeks reduced the severity of atopic dermatitis by over 61%.
Another clinical study in subjects aged 60 and older found that a ceramide body wash and moisturizer improved skin dryness and itchy skin in 15 days.
Overall, ceramides are considered non-irritating and safety tests have found little to no observable adverse effects from using this ingredient.
Ceramide NP is usually sourced from plants (like soybean or rice bran), or produced synthetically.
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.
Palmitic Acid is a fatty acid naturally found in our skin and in many plant and animal sources.
In cosmetics, it is usually derived from palm oil. It serves many purposes in skincare, acting as a cleanser, emollient, and emulsifier.
Interestingly, topically applied Palmitic Acid can be elongated into longer chain fatty acids and ceramides. A 2019 study found low levels of Palmitic Acid lead to slower development of cells, suggesting it plays a role in keeping your skin's renewal process on track.
The CIR (Cosmetic Ingredient Review) panel determined it safe as used in cosmetics at concentrations up to 13%. It is non-irritating and non-sensitizing in clinical studies.
The culprit behind fungal acne, the Malassezia yeast, feeds on fatty acids with carbon chain lengths between C11-C24. Palmitic Acid, at C16, falls right into that sweet spot.
In vitro studies have shown that Palmitic Acid is one of the fatty acids that induce rapid Malassezia growth in lab settings.
It's worth noting that what feeds yeast in a lab doesn't necessarily feed it on your face since formulation and your skin's chemistry play a bigger role.
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!
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.