Diazolidinyl urea is an antimicrobial preservative used in cosmetics. It is used in many cosmetics, skin care products, shampoos and conditioners, as well as a wide range of products including bubble baths, baby wipes and household detergents.

Diazolidinyl Urea Preservative Liquid is dissolved in a base of 60% propylene glycol. Can be used in surfactant based systems such as shampoos and body/shower gels, conditioners and other high water content products. Ideal for water-in-oil and oil-in-water emulsions, creams and lotions, make-up and other highly pigmented products. Not for use in products intended to be aerosolized.

Diazolidinyl Urea Preservative Liquid is heat sensitive and should be added to the water phase or to the emulsified portion of the formulation at a temperature of 122°F (50°C) or below, during the cool down stage.  Diazolidinyl Urea Preservative Liquid is effective over a broad pH range from 3-8. It is soluble in cationic, anionic and nonionic water-soluble formulations, as well as in the emulsified portion of water-in-oil or oil-in-water emulsions. Diazolidinyl Urea Preservative Liquid has been found effective at use levels between 0.1% – 0.5%. However, every cosmetic formulation should have a preservative system custom made to match its needs and should be tested to ensure proper preservation.

Diazolidinyl Urea Preservative Powder is a combination of 99% Diazolidinyl Urea (DU) and 1% Iodopropynyl Butylcarbamate (IPBC). A highly effective, broad spectrum, non-paraben preservative for oil-in-water and water-in-oil emulsions and water soluble formulations. It has no known chemical inactivators and is compatible with virtually all cosmetic ingredients, including proteins and surfactants. Not recommended for products intended to be aerosolized.

Diazolidinyl Urea Preservative Powder is heat sensitive and should be added to the water phase or to the emulsified portion of the formulation at a temperature of 122°F (50°C) or below, during the cool down stage. Effective over a broad pH range from 3-8. It is soluble in cationic, anionic and nonionic water-soluble formulations, as well as in the emulsified portion of water-in-oil or oil-in-water emulsions.

LIQUID Recommended Use Levels: 0.1 – 0.5%

POWDER Recommended Use Levels: 0.05% – 0.2%

Restrictions:

European Union (EU):

• Not for oral hygiene and lip care products
• Not to be used in products for children under 3 years old, except in bath products/shower gels and shampoos
• Not to be used in body lotion and body cream

US and Japan:

• Not for use in aerosols

LIQUID INCI: Propylene Glycol (and) Diazolidinyl Urea (and) Iodopropynyl Butylcarbamate
POWDER INCI: Diazolidinyl Urea (and) Iodopropynyl Butylcarbamate
aka in trade: Germal Plus, Germaben
Origin: USA
Notes: Caution in handling undiluted product. Causes mild eye irritation and may cause milk skin irritation. Read all warnings on product label.
Specifications are subject to change without notice.

Reference
wikipedia