The INKEY List Vitamin B, C and E Moisturizer Versus La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment

The INKEY List Vitamin B, C and E Moisturizer Versus La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment Detailed comparison of The INKEY List Vitamin B, C and E Moisturizer versus La Roche-Posay Effaclar Duo (+) Dual Action Acne Treatment. This brightening moisturizer is formulated around Niacinamide and Sodium Ascorbyl Phosphate to brighten dull-looking skin. This acne treatment is formulated around Benzoyl Peroxide and Capryloyl Salicylic Acid to clear breakouts and balance excess oil. Water Glycerin Glyceryl Stearate Se Cetearyl Alcohol Caprylic/Capric Triglyceride Cocos Nucifera Oil Stearic Acid Phenoxyethanol Benzyl Alcohol Carbomer Sodium Hydroxide Niacinamide Panthenol Sodium Ascorbyl Phosphate Sodium Hyaluronate Tocopheryl Acetate Ethylhexylglycerin Dehydroacetic Acid Lecithin Trisodium Ethylenediamine Disuccinate Ascorbyl Palmitate Tocopherol Helianthus Annuus Seed Oil Water, Glycerin, Glyceryl Stearate Se, Cetearyl Alcohol, Caprylic/Capric Triglyceride, Cocos Nucifera Oil, Stearic Acid, Phenoxyethanol, Benzyl Alcohol, Carbomer, Sodium Hydroxide, Niacinamide, Panthenol, Sodium Ascorbyl Phosphate, Sodium Hyaluronate, Tocopheryl Acetate, Ethylhexylglycerin, Dehydroacetic Acid, Lecithin, Trisodium Ethylenediamine Disuccinate, Ascorbyl Palmitate, Tocopherol, Helianthus Annuus Seed Oil Benzoyl Peroxide 5.5% Isostearyl Alcohol Pentylene Glycol Silica Capryloyl Salicylic Acid Potassium Hydroxide Acrylates/C10-30 Alkyl Acrylate Crosspolymer Disodium EDTA Epilobium Angustifolium Flower/Leaf/Stem Extract Benzoyl Peroxide 5.5%, Water, Isostearyl Alcohol, Glycerin, Pentylene Glycol, Silica, Carbomer, Capryloyl Salicylic Acid, Potassium Hydroxide, Tocopheryl Acetate, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Disodium EDTA, Epilobium Angustifolium Flower/Leaf/Stem Extract 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. 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. Tocopheryl Acetate is a stable, shelf-friendly form of vitamin E. Formulators love it because plain vitamin E oxidizes quickly once it hits air. This acetate version stays stable and resists going off, helping to extend a product's shelf life. It's actually inactive on its own and works like a slow-release "storage" form; the enzymes in your skin called esterases gradually convert it into active vitamin E over time. One in vivo study showed 5% of the acetate in the living layer of the epidermis converted to vitamin E after 5 days of application. This study also found the skin gained protection against UV damage even though the conversion was slow and small. Once converted, vitamin E acts as a skin's main fat-soluble antioxidant that fights free radicals to protect skin from damage. Topical vitamin E generally boosts the skin's photoprotection, and it reduced UV-damage in animal models. This ingredient has some brightening potential but it's more of a prevention ingredient than spot-fader. Cell studies show it can slow down melanin production but it's worth noting that it's not the most powerful brightener out there. Overall, it has a pretty solid safety profile and has been found to be non-irritating and