Prequel Multi-Acid Milk Peel AHA Exfoliating Solution Versus Paula's Choice Skin Perfecting 6% Mandelic Acid + 2% Lactic Acid Liquid Exfoliant

Prequel Multi-Acid Milk Peel AHA Exfoliating Solution Versus Paula's Choice Skin Perfecting 6% Mandelic Acid + 2% Lactic Acid Liquid Exfoliant Detailed comparison of Prequel Multi-Acid Milk Peel AHA Exfoliating Solution versus Paula's Choice Skin Perfecting 6% Mandelic Acid + 2% Lactic Acid Liquid Exfoliant. This smoothing exfoliator is formulated around Glycolic Acid and Mandelic Acid to refine skin texture and brighten dull-looking skin. This smoothing exfoliator is formulated around Mandelic Acid and Lactic Acid to refine skin texture and brighten dull-looking skin. Water Glycolic Acid Sodium Hydroxide Glycerin Propanediol Ethylhexyl Olivate Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer C13-14 Isoparaffin C11-12 Isoparaffin Phytic Acid Malic Acid Mandelic Acid Lactic Acid Lipase Protease Squalane Polyglyceryl-10 Stearate C15-23 Alkane Hydroxyacetophenone Phenoxyethanol Tricaprylin Glyceryl Oleate Ethylhexyl Polyhydroxystearate Tetradecane C13-14 Alkane Decyl Glucoside Maltodextrin Xanthan Gum Lecithin Sclerotium Gum Polyglyceryl-4 Oleate Carrageenan Silica Water, Glycolic Acid, Sodium Hydroxide, Glycerin, Propanediol, Ethylhexyl Olivate, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, C13-14 Isoparaffin, C11-12 Isoparaffin, Phytic Acid, Malic Acid, Mandelic Acid, Lactic Acid, Lipase, Protease, Squalane, Polyglyceryl-10 Stearate, C15-23 Alkane, Hydroxyacetophenone, Phenoxyethanol, Tricaprylin, Glyceryl Oleate, Ethylhexyl Polyhydroxystearate, Tetradecane, C13-14 Alkane, Decyl Glucoside, Maltodextrin, Xanthan Gum, Lecithin, Sclerotium Gum, Polyglyceryl-4 Oleate, Carrageenan, Silica 2,3-Butanediol Myrica Cerifera Fruit Extract Akebia Quinata Stem Extract Prunus Lannesiana Flower Extract Lactobacillus Ferment Lysate Saccharomyces Lysate Achillea Millefolium Extract Saccharide Isomerate Arginine Butylene Glycol Sodium Phytate Pentylene Glycol Citric Acid Sodium Citrate 1,2-Hexanediol Caprylyl Glycol Sodium Benzoate Water, 2,3-Butanediol, Mandelic Acid, Lactic Acid, Sodium Hydroxide, Myrica Cerifera Fruit Extract, Akebia Quinata Stem Extract, Prunus Lannesiana Flower Extract, Lactobacillus Ferment Lysate, Saccharomyces Lysate, Achillea Millefolium Extract, Saccharide Isomerate, Arginine, Hydroxyacetophenone, Butylene Glycol, Sodium Phytate, Pentylene Glycol, Xanthan Gum, Citric Acid, Sodium Citrate, 1,2-Hexanediol, Caprylyl Glycol, Sodium Benzoate These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Hydroxyacetophenone is a small phenolic molecule that earns its place in a formulas as an antioxidant and preservative booster. As a phenol, it is able to neutralize free radicals to protect both the product and the skin from oxidative stress. Though it can't kill microbes on its own, it works as a good supporting agent when combined with other preservatives like Phenoxyethanol or 1,2-Hexanediol. This ingredient naturally occurs as piceol in Norwegian spruce needles (~0.4-1.1% dry weight and in cloudberries). Though the cosmetic-grade material is synthesized for purity and consistency. You'll usually see it used at low levels and suppliers recommend up to 1% added to a water phase. Safety testing was done at concentrations like 0.05% in SPF products and 0.5% in a Human Repeated Insult Patch Test. The safety evidence is assuring; this ingredient is safe for cosmetics in current use and also holds safety status as a food flavoring as well. An honest caveat: the "soothing" and "anti-inflammatory" claims come mostly from supplier marketing rather than published clinical trials. The Cosmetic Ingredient Review's own literature search found no useful efficacy studies on this ingredient. So the antioxidant and preservative-boosting roles are the well supported ones while the calming benefit is plausible but thinly evidenced. Overall, this is a well-tolerated, low-irritation multitasker that quietly helps a formula stay fresh and stable. 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 a great choice for beginners or those with sensitive skin. Like glycolic acid, it can: Lactic acid also acts as a humectant (like hyaluronic acid). It can draw water into the skin to improve hydration and also plays a role in the skin's natural moisturizing factor (NMF) in the form of sodium lactate. Studies show it can boost ceramide production to strengthen the skin barrier and even help balance the skin’s microbiome. To get results, choose products with a pH between 3-4. Lower strengths (5-12%) focus on surface exfoliation; higher strengths (12% and up) can reach deeper in the dermis (deeper, supportive layer) to improve skin texture and firmness over time. Though it was originally derived from milk, most modern lactic acid used in skincare is vegan. It is made through non-dairy fermentation to create a bio-identical and stable form suitable for all formulations. When lactic acid shows up near the end of an ingredient list, it u