La Roche-Posay 10% Pure Niacinamide Serum Versus Summer Fridays Midnight Ritual Retinol Renewal Serum

La Roche-Posay 10% Pure Niacinamide Serum Versus Summer Fridays Midnight Ritual Retinol Renewal Serum Detailed comparison of La Roche-Posay 10% Pure Niacinamide Serum versus Summer Fridays Midnight Ritual Retinol Renewal Serum. This brightening serum is formulated around Niacinamide and Phenylethyl Resorcinol to fade the look of dark spots and brighten dull-looking skin. This anti-aging serum is formulated around Retinyl Linoleate and Retinol to soften the look of wrinkles and refine skin texture. Water Niacinamide Glycerin Alcohol Denat. Hydroxyethylpiperazine Ethane Sulfonic Acid Dimethicone Isopropyl Lauroyl Sarcosinate Octyldodecanol PEG-20 Methyl Glucose Sesquistearate Tin Oxide Sorbitan Oleate Dimethiconol Cetearyl Ethylhexanoate Isohexadecane Sodium Hyaluronate Phenylethyl Resorcinol Poloxamer 338 Ammonium Polyacryloyldimethyl Taurate Disodium EDTA Isopropyl Myristate Citric Acid Xanthan Gum Polysorbate 80 Acrylamide/Sodium Acryloyldimethyltaurate Copolymer Tocopherol Phenoxyethanol Mica CI 77891 Parfum Water, Niacinamide, Glycerin, Alcohol Denat., Hydroxyethylpiperazine Ethane Sulfonic Acid, Dimethicone, Isopropyl Lauroyl Sarcosinate, Octyldodecanol, PEG-20 Methyl Glucose Sesquistearate, Tin Oxide, Sorbitan Oleate, Dimethiconol, Cetearyl Ethylhexanoate, Isohexadecane, Sodium Hyaluronate, Phenylethyl Resorcinol, Poloxamer 338, Ammonium Polyacryloyldimethyl Taurate, Disodium EDTA, Isopropyl Myristate, Citric Acid, Xanthan Gum, Polysorbate 80, Acrylamide/Sodium Acryloyldimethyltaurate Copolymer, Tocopherol, Phenoxyethanol, Mica, CI 77891, Parfum Squalane Caprylic/Capric Triglyceride Cetearyl Alcohol Glyceryl Stearate Se Simmondsia Chinensis Seed Oil Propanediol Sorbitan Stearate Sclerotium Gum Retinyl Linoleate Retinol Avena Sativa Bran Extract Centella Asiatica Extract Bisabolol Rosa Canina Fruit Oil Persea Gratissima Oil Prunus Amygdalus Dulcis Oil Butyrospermum Parkii Butter Ricinus Communis Seed Oil Hydrogenated Castor Oil Glycine Soja Oil Tocopheryl Acetate Phytic Acid Synthetic Beeswax Copernicia Cerifera Cera Maltodextrin Caprylhydroxamic Acid 1,2-Hexanediol Sodium Benzoate Potassium Sorbate Levulinic Acid Sodium Levulinate Sodium Hydroxide Water, Glycerin, Squalane, Caprylic/Capric Triglyceride, Cetearyl Alcohol, Glyceryl Stearate Se, Simmondsia Chinensis Seed Oil, Propanediol, Sorbitan Stearate, Sclerotium Gum, Retinyl Linoleate, Retinol, Avena Sativa Bran Extract, Centella Asiatica Extract, Niacinamide, Bisabolol, Rosa Canina Fruit Oil, Persea Gratissima Oil, Prunus Amygdalus Dulcis Oil, Butyrospermum Parkii Butter, Sodium Hyaluronate, Ricinus Communis Seed Oil, Hydrogenated Castor Oil, Glycine Soja Oil, Tocopherol, Tocopheryl Acetate, Phytic Acid, Synthetic Beeswax, Copernicia Cerifera Cera, Maltodextrin, Caprylhydroxamic Acid, 1,2-Hexanediol, Sodium Benzoate, Potassium Sorbate, Levulinic Acid, Sodium Levulinate, Citric Acid, Sodium Hydroxide Be the first to review These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes. Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath. However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products. Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH. In skincare formulas, citric acid can: While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants. Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations. Rosacea skin has a lower threshold for acids generally, with 62.5% of rosacea subjects in one study reacting to lactic acid in a sting test. This is why we mark citric acid as a potential rosacea trigger. However, this ingredient shows up as a pH adjuster or chelator at roughly 0.1-1% in many products. These low levels are unlikely to be an issue for rosacea skin and becomes a potential trigger at exfoliating concentrations (20%). Because everybody's skin is unique, we recommend a patch test if you are unsure. 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. Niacinamide is a multitasking form of vitamin B3 that strengthens the skin barrier, reduces pores and dark spots, regulates oil, and improves signs of aging. And the best part? It's gentle and well-tolerated by most skin types, including sensitive and reactive skin. You might have heard of "niacin flush", or the reddening of skin that causes itchiness. Niacinamide has not been found to cause this. In very rare cases, some individuals may not be able to tolerate nia