Bolden Nightime Repair Serum With 10% Glycolic Acid Versus Paula's Choice C15 Super Booster

Bolden Nightime Repair Serum With 10% Glycolic Acid Versus Paula's Choice C15 Super Booster Detailed comparison of Bolden Nightime Repair Serum With 10% Glycolic Acid versus Paula's Choice C15 Super Booster. This smoothing serum is formulated around Glycolic Acid and Tetrahexyldecyl Ascorbate to refine skin texture and brighten dull-looking skin. This brightening serum is formulated around Ascorbic Acid and Ferulic Acid to brighten dull-looking skin and soften the look of wrinkles. Water Glycolic Acid Aminomethyl Propanol Aloe Barbadensis Leaf Juice Caprylic/Capric Triglyceride Carthamus Tinctorius Seed Oil Cetyl Alcohol Dimethicone Glycerin Propanediol Cetearyl Olivate Methyl Glucose Sesquistearate Cetearyl Alcohol Sorbitan Olivate Sodium Magnesium Silicate Stearic Acid Phenoxyethanol Sodium Stearoyl Glutamate Ceteareth-20 Panthenyl Triacetate Bisabolol Xanthan Gum Ethylhexylglycerin Tetrahexyldecyl Ascorbate Butylene Glycol Pentylene Glycol Oryza Sativa Bran Extract Acetyl Rheum Rhaponticum Root Extract Helianthus Annuus Extract Hydroxyphenyl Propamidobenzoic Acid Rosmarinus Officinalis Leaf Extract Tocopherol Zingiber Officinale Root Extract Arginine Parfum Water, Glycolic Acid, Aminomethyl Propanol, Aloe Barbadensis Leaf Juice, Caprylic/Capric Triglyceride, Carthamus Tinctorius Seed Oil, Cetyl Alcohol, Dimethicone, Glycerin, Propanediol, Cetearyl Olivate, Methyl Glucose Sesquistearate, Cetearyl Alcohol, Sorbitan Olivate, Sodium Magnesium Silicate, Stearic Acid, Phenoxyethanol, Sodium Stearoyl Glutamate, Ceteareth-20, Panthenyl Triacetate, Bisabolol, Xanthan Gum, Ethylhexylglycerin, Tetrahexyldecyl Ascorbate, Butylene Glycol, Pentylene Glycol, Oryza Sativa Bran Extract, Acetyl Rheum Rhaponticum Root Extract, Helianthus Annuus Extract, Hydroxyphenyl Propamidobenzoic Acid, Rosmarinus Officinalis Leaf Extract, Tocopherol, Zingiber Officinale Root Extract, Arginine, Parfum Ascorbic Acid Dipropylene Glycol Ethoxydiglycol Sodium Hydroxide PPG-26-Buteth-26 PEG-40 Hydrogenated Castor Oil 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. Bisabolol is a gentle skin conditioner, antioxidant, and soothing ingredient. It's primary claim to fame is soothing and research shows topically applied bisabolol can quiet the chemical messengers that cause your skin to become inflamed, helping to sooth any irritation. A clinical study found that applying 0.5% bisabolol daily for 8 weeks produced an average 9% decrease in skin pigmentation. Researchers found it can also suppress the process that leads to excess melanin production in skin. In vitro studies found that bisabolol combined with propylene glycol significantly increased skin permeability by increasing lipid fluidity in the stratum corneum. You'll likely see use concentrations quite low, usually 0.1-0.2%. Overall, this is a well-tolerated ingredient that works well in formulas designed for sensitive, reactive, or post-procedure skin. 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 t