Biologique Recherche Lotion P50W Versus Institut Esthederm Intensive AHA Peel Concentrated Serum

Biologique Recherche Lotion P50W Versus Institut Esthederm Intensive AHA Peel Concentrated Serum Detailed comparison of Biologique Recherche Lotion P50W versus Institut Esthederm Intensive AHA Peel Concentrated Serum. This smoothing toner is formulated around Gluconolactone and Niacinamide to refine skin texture and refine the look of pores. This smoothing serum is formulated around Glycolic Acid and Lactic Acid to refine skin texture and brighten dull-looking skin. Water Gluconolactone Niacinamide Glycerin Propylene Glycol Lactic Acid Ethoxydiglycol Magnesium Chloride Malic Acid Arctium Lappa Root Extract Cochlearia Armoracia Root Extract Quillaja Saponaria Bark Extract Arnica Montana Flower Extract Capsicum Frutescens Fruit Extract Phytic Acid Citric Acid Sodium Lactate Allantoin Serine Sulfur Vinegar Sodium Salicylate Sorbitol Tea-Lactate Urea Sodium Benzoate Sodium Bisulfite Water, Gluconolactone, Niacinamide, Glycerin, Propylene Glycol, Lactic Acid, Ethoxydiglycol, Magnesium Chloride, Malic Acid, Arctium Lappa Root Extract, Cochlearia Armoracia Root Extract, Quillaja Saponaria Bark Extract, Arnica Montana Flower Extract, Capsicum Frutescens Fruit Extract, Phytic Acid, Citric Acid, Sodium Lactate, Allantoin, Serine, Sulfur, Vinegar, Sodium Salicylate, Sorbitol, Tea-Lactate, Urea, Sodium Benzoate, Sodium Bisulfite Propylheptyl Caprylate Propanediol Glycolic Acid Sodium Hydroxide Salicylic Acid Arachidyl Alcohol Ammonium Acryloyldimethyltaurate/Vp Copolymer Alcohol Parfum Arginine Pentylene Glycol Rhamnose Arachidyl Glucoside C13-14 Isoparaffin PEG-75 Tocopherol Carnosine Disodium Adenosine Triphosphate Farnesol Laminaria Digitata Extract Water, Propylheptyl Caprylate, Propanediol, Glycolic Acid, Citric Acid, Sodium Hydroxide, Lactic Acid, Glycerin, Salicylic Acid, Arachidyl Alcohol, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Alcohol, Parfum, Arginine, Pentylene Glycol, Rhamnose, Arachidyl Glucoside, C13-14 Isoparaffin, Propylene Glycol, PEG-75, Tocopherol, Carnosine, Disodium Adenosine Triphosphate, Farnesol, Laminaria Digitata Extract 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. Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes. Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath. However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products. Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH. In skincare formulas, citric acid can: While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants. Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations. Rosacea skin has a lower threshold for acids generally, with 62.5% of rosacea subjects in one study reacting to lactic acid in a sting test. This is why we mark citric acid as a potential rosacea trigger. However, this ingredient shows up as a pH adjuster or chelator at roughly 0.1-1% in many products. These low levels are unlikely to be an issue for rosacea skin and becomes a potential trigger at exfoliating concentrations (20%). Because everybody's skin is unique, we recommend a patch test if you are unsure. 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. Lactic Acid is another well-loved alpha hydroxy acid (AHA). It is gentler than glycolic acid but still highly effective. Its main role is to exfoliate the surface of the skin by loosening the “glue” that holds dead skin cells together. Shedding those old cells leads to smoother, softer, and more even-toned skin. Because lactic acid molecules are larger than glycolic acid, they don’t penetrate as deeply. This means they’re less likely to sting or irritate, making it