The molecular weight of mandelic acid is 152.1 daltons which is larger than other alpha hydroxy acids (glycolic acid is 76.0 daltons, for example).
Use a sunscreen, wear protective clothing, and limit sun exposure while using this product and for a week afterwards.Contradictions: This formula contains Direct Acids. For best results, please avoid using the following ingredients in the same regimen:Copper PeptidesPeptidesOther direct acidsEUK 134100% Niacinamide PowderIngredients: Propanediol, Aqua (Water), Mandelic Acid, Glycerin, Dimethyl Isosorbide, Sodium Hyaluronate Crosspolymer, Tasmannia Lanceolata Fruit/Leaf Extract, Pentylene Glycol, Polysorbate 20, Sodium Hydroxide, Ethylhexylglycerin, 1,2-Hexanediol, Caprylyl Glycol.