Humectants

Ammonium lactate is a combination of lactic acid and ammonium hydroxide. It's commonly used as a moisturizer to treat dry, scaly, itchy skin conditions, such as ichthyosis vulgaris and xerosis. The lactic acid component helps to exfoliate dead skin cells, while the ammonium hydroxide component helps to moisturize and soften the skin. It's available in various forms, including lotions and creams, and typically requires a doctor's prescription for use.