PCA Skin C & E Advanced Versus Paula's Choice C15 Super Booster

PCA Skin C & E Advanced Versus Paula's Choice C15 Super Booster Detailed comparison of PCA Skin C & E Advanced versus Paula's Choice C15 Super Booster. This anti-aging serum is formulated around Ascorbic Acid and Tocopherol to soften the look of wrinkles and fade the look of dark spots. This brightening serum is formulated around Ascorbic Acid and Ferulic Acid to brighten dull-looking skin and soften the look of wrinkles. Cyclopentasiloxane Ascorbic Acid Ethylhexyl Hydroxystearate Polysilicone-11 Tocopherol Isosorbide Dicaprylate Polymethylsilsesquioxane Hexylresorcinol Silybum Marianum Fruit Extract Hordeum Distichon Extract Citrus Aurantium Dulcis Oil Silica Phellodendron Amurense Bark Extract Santalum Album Wood Extract Cyclopentasiloxane, Ascorbic Acid, Ethylhexyl Hydroxystearate, Polysilicone-11, Tocopherol, Isosorbide Dicaprylate, Polymethylsilsesquioxane, Hexylresorcinol, Silybum Marianum Fruit Extract, Hordeum Distichon Extract, Citrus Aurantium Dulcis Oil, Silica, Phellodendron Amurense Bark Extract, Santalum Album Wood Extract Water Dipropylene Glycol Propanediol Glycerin Ethoxydiglycol Sodium Hydroxide PPG-26-Buteth-26 PEG-40 Hydrogenated Castor Oil Bisabolol Ferulic Acid Sodium Phytate Decylene Glycol 1,2-Hexanediol Sphingomonas Ferment Extract Phenoxyethanol Water, Ascorbic Acid, Dipropylene Glycol, Propanediol, Glycerin, Ethoxydiglycol, Sodium Hydroxide, PPG-26-Buteth-26, PEG-40 Hydrogenated Castor Oil, Bisabolol, Ferulic Acid, Sodium Phytate, Decylene Glycol, Tocopherol, 1,2-Hexanediol, Sphingomonas Ferment Extract, Phenoxyethanol 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. Ascorbic Acid is is pure Vitamin C and is the biologically active form used directly by skin. Not only is vitamin C great for your overall health and immune system, but it also has plenty of benefits for your skin. It is best supported by academic literature for: Topical vitamin C has been shown to help neutralize oxidative stress from UV and pollution, helping to improve photoaging and hyperpigmentation when used consistently. One clinical study found that using 5% topical vitamin C for six months improved signs of photodamaged skin, both on the surface and in the deeper structural layers of the skin. While vitamin C doesn’t replace sunscreen, studies show it can boost photoprotection when combined with Vitamin E and ferulic acid. These two ingredients help improve stability and protective effects. The big downside of this ingredient is formulation difficulty. Vitamin C is prone to oxidation and doesn't penetrate the skin unless formulated correctly. Research found that vitamin C absorbs into the skin best at a low pH (< 3.5) with about 20% being the upper limit for effective absorption. Skin levels can saturate after repeated application; this means your skin won’t keep absorbing more once it’s full of vitamin C. This is why more isn’t always better with vitamin C and why very high concentrations don’t necessarily give extra benefits. Ascorbic acid generally works well with many skincare ingredients but can be irritating when combined with other active ingredients. Strong oxidizing acne treatments like benzoyl peroxide can reduce the effectiveness of vitamin C if they are used at the same time; they are often recommended for use at different times of day. Read more about other types of Vitamin C: Foods rich with vitamin C include oranges, strawberries, broccoli, bell peppers, and more. When consuming Vitamin C, your skin receives a portion of the nutrients. 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-binding capacity over 2-4 weeks. This ingredient is especially loved for being a team player. When combined with Vitamin C, the photoprotective effect of both ingredients roughly doubles and the combo also helps reduce UV-induced DNA damage. 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 bu