Obagi Professional-C Serum 20% Versus Alastin C-Radical Defense Antioxidant Serum

Obagi Professional-C Serum 20% Versus Alastin C-Radical Defense Antioxidant Serum Detailed comparison of Obagi Professional-C Serum 20% versus Alastin C-Radical Defense Antioxidant Serum. This brightening serum is formulated around Ascorbic Acid and Ascorbyl Glucoside to brighten dull-looking skin and soften the look of wrinkles. This anti-aging serum is formulated around Sodium Ascorbate and Ubiquinone to soften the look of wrinkles and brighten dull-looking skin. Propylene Glycol Water Ascorbic Acid Alcohol Ascorbyl Glucoside Ethoxydiglycol Phenoxyethanol Sorbitol Sodium Hyaluronate Zinc Chloride Calcium Hydroxide Parfum Propylene Glycol, Water, Ascorbic Acid, Alcohol, Ascorbyl Glucoside, Ethoxydiglycol, Phenoxyethanol, Sorbitol, Sodium Hyaluronate, Zinc Chloride, Calcium Hydroxide, Parfum Caprylic/Capric Triglyceride Glycerin Sodium Acrylates Copolymer Squalane Sodium Ascorbate Ubiquinone Ectoin Physalis Angulata Extract Betaine Phosphatidylcholine Camellia Sinensis Leaf Extract Carnosine Centella Asiatica Extract Olea Europaea Leaf Extract Zingiber Officinale Root Extract Ergothioneine Dunaliella Salina Extract Punica Granatum Fruit Extract Bisabolol Lactoferrin Tremella Fuciformis Sporocarp Extract Polyglyceryl-10 Laurate Cetyl Alcohol Sodium Benzoate Xanthan Gum Tocopherol Helianthus Annuus Seed Oil Propanediol Tocopheryl Acetate Caprylyl Glycol Mannitol Lecithin C12-15 Alkyl Benzoate Ethylhexylglycerin Caprylhydroxamic Acid Citric Acid Potassium Sorbate Water, Caprylic/Capric Triglyceride, Glycerin, Sodium Acrylates Copolymer, Squalane, Sodium Ascorbate, Ubiquinone, Ectoin, Physalis Angulata Extract, Betaine, Phosphatidylcholine, Camellia Sinensis Leaf Extract, Carnosine, Centella Asiatica Extract, Olea Europaea Leaf Extract, Zingiber Officinale Root Extract, Ergothioneine, Dunaliella Salina Extract, Punica Granatum Fruit Extract, Bisabolol, Lactoferrin, Tremella Fuciformis Sporocarp Extract, Polyglyceryl-10 Laurate, Cetyl Alcohol, Sodium Benzoate, Xanthan Gum, Tocopherol, Helianthus Annuus Seed Oil, Propanediol, Tocopheryl Acetate, Caprylyl Glycol, Mannitol, Lecithin, Phenoxyethanol, C12-15 Alkyl Benzoate, Ethylhexylglycerin, Caprylhydroxamic Acid, Citric Acid, Potassium Sorbate 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. 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. Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product. So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation. You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Remember to stay hydrated!