Allies of Skin 20% Vitamin C Brighten + Firm Serum Versus Theramid Lino-8

Allies of Skin 20% Vitamin C Brighten + Firm Serum Versus Theramid Lino-8 Detailed comparison of Allies of Skin 20% Vitamin C Brighten + Firm Serum versus Theramid Lino-8. This brightening serum is formulated around 3-O-Ethyl Ascorbic Acid and Glutathione to brighten dull-looking skin. This barrier-repair serum is formulated around Panthenol and Linoleic Acid to strengthen the skin barrier and calm redness. Propanediol Glycerin 3-O-Ethyl Ascorbic Acid Benzimidazole Diamond Amidoethyl Urea Carbamoyl Propyl Polymethylsilsesquioxane Dimethyl Isosorbide Helianthus Annuus Seed Wax Polyglyceryl-10 Tristearate Ethoxydiglycol Dicaprylyl Ether Water Caprylyl Glycol Citrus Aurantium Dulcis Callus Culture Extract Glutathione Acetyl Cysteine Dimethylmethoxy Chromanol Ergothioneine Tocopherol Gluconolactone Leuconostoc/Radish Root Ferment Filtrate Xanthan Gum Silica Sodium Benzoate Calcium Gluconate Phenoxyethanol Propanediol, Glycerin, 3-O-Ethyl Ascorbic Acid, Benzimidazole Diamond Amidoethyl Urea Carbamoyl Propyl Polymethylsilsesquioxane, Dimethyl Isosorbide, Helianthus Annuus Seed Wax, Polyglyceryl-10 Tristearate, Ethoxydiglycol, Dicaprylyl Ether, Water, Caprylyl Glycol, Citrus Aurantium Dulcis Callus Culture Extract, Glutathione, Acetyl Cysteine, Dimethylmethoxy Chromanol, Ergothioneine, Tocopherol, Gluconolactone, Leuconostoc/Radish Root Ferment Filtrate, Xanthan Gum, Silica, Sodium Benzoate, Calcium Gluconate, Phenoxyethanol Panthenol Linoleic Acid Coco-Caprylate C15-19 Alkane Persea Gratissima Oil Polyglyceryl-6 Distearate Saccharomyces Ferment Dimethicone Glyceryl Stearate Helianthus Annuus Seed Oil Phytonadione Epoxide Ubiquinone Linolenic Acid Lauroyl Lysine Haematococcus Pluvialis Extract Squalene Beta-Sitosterol Dimethicone/Vinyl Dimethicone Crosspolymer Disodium Stearoyl Glutamate Sclerotium Gum Ethylhexylglycerin Water, Panthenol, Linoleic Acid, Coco-Caprylate, Glycerin, C15-19 Alkane, Persea Gratissima Oil, Polyglyceryl-6 Distearate, Saccharomyces Ferment, Dimethicone, Glyceryl Stearate, Helianthus Annuus Seed Oil, Phytonadione Epoxide, Ubiquinone, Linolenic Acid, Lauroyl Lysine, Haematococcus Pluvialis Extract, Squalene, Beta-Sitosterol, Dimethicone/Vinyl Dimethicone Crosspolymer, Xanthan Gum, Disodium Stearoyl Glutamate, Sclerotium Gum, Tocopherol, Phenoxyethanol, Ethylhexylglycerin 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. 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. Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!). It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome. On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive. Another perk of this ingredient is that it stays functional across a wide pH range (3-10). You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own. Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU. Safety-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages. Adverse systemic effects only showed up in animal studies at exposures roughly 200x higher than what people get from cosmetics. And despite its very widespread use, this ingredient is a rare sensitizer and allergic reactions are uncommon. Tocopherol is a fat-soluble antioxidant known as Vitamin E. You'll find this ingredient in the vast majority of skincare (for good reason). It works to neutralize free radicals, or unstable molecules generated by UV exposure, pollution, and other environmental stressors, before they can cause oxidative damage to your skin cells. Topically applied tocopherol has been shown to protect against UV damage by ramping up the skin's own natural defense enzymes. It also acts as a skin conditioning agent; some studies show that regular topical use can improve the skin's water-bin