Preservidant IDP is a paraben free preservative system that is easy to work with and ensures effective coverage over a broad pH range of 3-9. Soluble in propylene glycol, glycerine, freely soluble in alcohol and soluble in water up to 3%, Preservidant IDP is effective against Gram-negative bacteria, Gram-positive bacteria, yeasts and molds. This system is typically used for rinse off applications and due to its low use level is suitable for difficult-to-preserve cosmetics. With correct use, Preservidant IDP does not effect color, odor or viscosity of the finished product. It is a clear, colorless liquid with mild odor.