Sodium hydroxymethylglycinate is a highly effective, broad-spectrum preservative, which can effectively inhibit Gram-positive bacteria, Gram-negative bacteria, yeasts and molds. This product is a 50% sodium hydroxymethylglycinate aqueous solution, which can be used in shampoos, cold waves, hair dyes, conditioners, soaps, shampoos and other alkaline cosmetics and detergents. The general addition amount is 0.2-0.6%. Features: This product is still very stable in a solution with a PH value of 3-12, so it can be used in strong alkaline cosmetics and detergents.