Paula's Choice 10% Azelaic Acid Booster Versus REVOX B77 JUST Azelaic Acid 10% Brightening Solution

Paula's Choice 10% Azelaic Acid Booster Versus REVOX B77 JUST Azelaic Acid 10% Brightening Solution Detailed comparison of Paula's Choice 10% Azelaic Acid Booster versus REVOX B77 JUST Azelaic Acid 10% Brightening Solution. This calming treatment is formulated around Azelaic Acid and Salicylic Acid to calm redness and fade the look of dark spots. This brightening treatment is formulated around Azelaic Acid to brighten dull-looking skin and calm redness. Water Azelaic Acid C12-15 Alkyl Benzoate Caprylic/Capric Triglyceride Methyl Glucose Sesquistearate Glycerin Cetearyl Alcohol Glyceryl Stearate Dimethicone Salicylic Acid Adenosine Glycyrrhiza Glabra Root Extract Boerhavia Diffusa Root Extract Allantoin Bisabolol Cyclopentasiloxane Xanthan Gum Sclerotium Gum Propanediol Butylene Glycol Phenoxyethanol Water, Azelaic Acid, C12-15 Alkyl Benzoate, Caprylic/Capric Triglyceride, Methyl Glucose Sesquistearate, Glycerin, Cetearyl Alcohol, Glyceryl Stearate, Dimethicone, Salicylic Acid, Adenosine, Glycyrrhiza Glabra Root Extract, Boerhavia Diffusa Root Extract, Allantoin, Bisabolol, Cyclopentasiloxane, Xanthan Gum, Sclerotium Gum, Propanediol, Butylene Glycol, Phenoxyethanol Isododecane Dimethicone/Bis-Isobutyl PPG-20 Crosspolymer Ethylhexyl Stearate Ethoxydiglycol Isopropyl Myristate Ammonium Acryloyldimethyltaurate/Vp Copolymer PPG-1-PEG-9 Lauryl Glycol Ether Disodium EDTA Water, Azelaic Acid, Isododecane, Dimethicone/Bis-Isobutyl PPG-20 Crosspolymer, Ethylhexyl Stearate, Ethoxydiglycol, Isopropyl Myristate, Ammonium Acryloyldimethyltaurate/Vp Copolymer, PPG-1-PEG-9 Lauryl Glycol Ether, Phenoxyethanol, Disodium EDTA These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Azelaic acid is a multitasker ingredient that helps treat acne, pigmentation, and irritation. It is a great option for sensitive skin. What makes it special? OTC Azelaic acid is usually available in concentrations from 10-15% and anything over requires a prescription. Here's what each tier does best: Unlike other acids, azelaic acid will not make your skin more photosensitive/sun sensitive. Though this ingredient is naturally occurring in grains like wheat, rye, and barley, it is usually synthetically created for cosmetics to ensure stability and effectiveness. 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!