Methylparaben is an anti-fungal agent often used in a variety of cosmetics and personal-care products. Methylparaben is produced naturally and found in several fruits, primarily blueberries, along with other parabens. There is no evidence that methylparaben or propyl parabens are harmful at concentrations typically used in body care or cosmetics. It is a fine white, powder, odorless and soluble in water. Usage amounts: follow recipe guidelines. The Cosmetic Ingredient Review (CIR) reviewed the safety of methylparaben, propyl paraben, and butylparaben in 1984 and concluded they were safe for use in cosmetic products at levels up to 25%. Typically parabens are used at levels ranging from 0.01 to 0.3%.