Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

FaceTheory Glow-C Daily Moisturiser Versus Olay Vitamin C + Peptide 24

FaceTheory Glow-C Daily Moisturiser Versus Olay Vitamin C + Peptide 24 Detailed comparison of FaceTheory Glow-C Daily Moisturiser versus Olay Vitamin C + Peptide 24. This brightening moisturizer is formulated around Niacinamide and Sodium Ascorbyl Phosphate to

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FaceTheory Glow-C Daily Moisturiser Versus Olay Vitamin C + Peptide 24 Detailed comparison of FaceTheory Glow-C Daily Moisturiser versus Olay Vitamin C + Peptide 24. This brightening moisturizer is formulated around Niacinamide and Sodium Ascorbyl Phosphate to brighten dull-looking skin and fade the look of dark spots. This brightening moisturizer is formulated around Niacinamide and 3-O-Ethyl Ascorbic Acid to brighten dull-looking skin and soften the look of wrinkles. Water Niacinamide C15-19 Alkane Cetyl Alcohol Glyceryl Stearate Polyglyceryl-6 Stearate Hydroxystearic Acid Rosa Canina Seed Oil Cucurbita Pepo Seed Oil Tocopherol Glycerin Sodium Anisate Sodium Levulinate Sodium Ascorbyl Phosphate Lactic Acid Glyceryl Caprylate 3-O-Ethyl Ascorbic Acid Citrus Bergamia Peel Oil Expressed Gellan Gum Polyglyceryl-6 Behenate Sodium Phytate Xanthan Gum Limonene Linalool Water, Niacinamide, C15-19 Alkane, Cetyl Alcohol, Glyceryl Stearate, Polyglyceryl-6 Stearate, Hydroxystearic Acid, Rosa Canina Seed Oil, Cucurbita Pepo Seed Oil, Tocopherol, Glycerin, Sodium Anisate, Sodium Levulinate, Sodium Ascorbyl Phosphate, Lactic Acid, Glyceryl Caprylate, 3-O-Ethyl Ascorbic Acid, Citrus Bergamia Peel Oil Expressed, Gellan Gum, Polyglyceryl-6 Behenate, Sodium Phytate, Xanthan Gum, Limonene, Linalool Isohexadecane Dimethicone Isopropyl Isostearate Sodium Polyacryloyldimethyl Taurate Stearyl Alcohol Palmitoyl Pentapeptide-4 Panthenol Sodium Lactate Trehalose Cetearyl Glucoside Cetearyl Alcohol Behenyl Alcohol Stearic Acid Palmitic Acid Dimethiconol PEG-100 Stearate Sodium Benzoate Parfum Ascorbic Acid Avena Sativa Peptide Water, Glycerin, Isohexadecane, Niacinamide, Dimethicone, Lactic Acid, Isopropyl Isostearate, Sodium Polyacryloyldimethyl Taurate, Stearyl Alcohol, 3-O-Ethyl Ascorbic Acid, Palmitoyl Pentapeptide-4, Panthenol, Sodium Lactate, Trehalose, Cetearyl Glucoside, Cetearyl Alcohol, Behenyl Alcohol, Cetyl Alcohol, Stearic Acid, Palmitic Acid, Dimethiconol, PEG-100 Stearate, Sodium Benzoate, Parfum, Ascorbic Acid, Avena Sativa Peptide These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. 3-O-Ethyl Ascorbic Acid is one of the most popular "stable" vitamin C derivatives in skincare. Plain ascorbic acid is fantastic but notoriously fragile; it browns, oxidizes, and loses potency fast. So attaching an ethyl group to the third carbon of the molecule gives it some cool perks: In a formula, it does the 3 classic vitamin C jobs: it acts as an antioxidant, helps brighten skin tone by inhibiting tyrosinase, and supports collagen. The evidence is reasonably solid for a cosmetic ingredient; Liao and colleagues (2018) showed it's significantly more stable than ascorbic acid while still being effective. A 2021 study by Zerbinati and colleagues tested a serum with 30% 3-O-ethyl-l-ascorbic acid and 1% lactic acid significantly increased collagen production, reduced UVB-induced DNA damage, and decreased melanin on a reconstructed pigmented skin model. Typical real world usage sits around 0.5-5% (and 1-2% is common for daily serums). Amounts up to 30% have been shown to be non-irritating on human skin samples, but two isolated cases reported allergic contact dermatitis so a patch test is sensible if you have reactive skin. Cetyl Alcohol is a fatty alcohol. Fatty Alcohols are most often used as an emollient or to thicken a product. Its main roles are: Though it has "alcohol" in the name, it is not related to denatured alcohol or ethyl alcohol. The FDA allows products labeled "alcohol-free" to have fatty alcohols. This ingredient may not be fungal acne safe. It is a primary fatty alcohol with a chain length above 12 carbons. A study from 2019 show Malassezia can feed on fatty alcohols in this range, so it may trigger fungal acne in those prone to it. 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. Lactic Acid is another well-loved alpha hydroxy acid (AHA). It is gentler than glycolic acid but still highly effective. Its main role is to exfoliate the surface of the skin by loosening the “glue” that holds dead skin cells together. Shedding those old cells leads