The INKEY List C-50 Blemish Night Treatment Versus Paula's Choice C15 Super Booster

The INKEY List C-50 Blemish Night Treatment Versus Paula's Choice C15 Super Booster Detailed comparison of The INKEY List C-50 Blemish Night Treatment versus Paula's Choice C15 Super Booster. This acne treatment is formulated around Sodium Ascorbyl Phosphate and Salicylic Acid to clear breakouts and refine skin texture. This brightening serum is formulated around Ascorbic Acid and Ferulic Acid to brighten dull-looking skin and soften the look of wrinkles. Water Propanediol Sodium Ascorbyl Phosphate Salicylic Acid Ammonium Acryloyldimethyltaurate/Vp Copolymer Phenoxyethanol Caprylyl/Capryl Glucoside Xanthan Gum Glycerin Sodium Hydroxide Madecassoside Ethylhexylglycerin Hydroxyacetophenone Sodium Gluconate Sodium Metabisulfite Lecithin Ascorbyl Palmitate Nelumbo Nucifera Flower Extract Nymphaea Coerulea Flower Extract Tocopherol Helianthus Annuus Seed Oil Water, Propanediol, Sodium Ascorbyl Phosphate, Salicylic Acid, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Phenoxyethanol, Caprylyl/Capryl Glucoside, Xanthan Gum, Glycerin, Sodium Hydroxide, Madecassoside, Ethylhexylglycerin, Hydroxyacetophenone, Sodium Gluconate, Sodium Metabisulfite, Lecithin, Ascorbyl Palmitate, Nelumbo Nucifera Flower Extract, Nymphaea Coerulea Flower Extract, Tocopherol, Helianthus Annuus Seed Oil Ascorbic Acid Dipropylene Glycol Ethoxydiglycol PPG-26-Buteth-26 PEG-40 Hydrogenated Castor Oil Bisabolol Ferulic Acid Sodium Phytate Decylene Glycol 1,2-Hexanediol Sphingomonas Ferment Extract 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 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. Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin. It’s often used to: Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent. Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective. In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline. Your skin has a natural pH and acid mant