Aluminum Zirconium Tetrachlorohydrex PG is a complex chemical compound primarily used as an active ingredient in antiperspirants and deodorants. It functions by temporarily blocking sweat glands, thereby reducing perspiration and body odor.

Chemical Composition and Structure:

• Composition: This compound is a combination of aluminum and zirconium salts, specifically formulated with glycine (PG stands for propylene glycol) to enhance its effectiveness.
• Structure: The structure includes aluminum and zirconium ions that create a stable complex, which interacts with chloride ions to form a gel-like substance when applied to the skin.

Physical Properties:

• Appearance: Typically a white to off-white powder.
• Odor: Generally odorless, making it suitable for use in various formulations without affecting fragrance.
• Solubility: Soluble in water; forms a clear solution or gel when mixed with liquid.

Production Process:

1. Synthesis: The compound is synthesized through a controlled chemical reaction involving aluminum chloride, zirconium chloride, and glycine.
2. Purification: The resulting product undergoes purification to remove any unreacted materials and impurities.
3. Formulation: The purified Aluminum Zirconium Tetrachlorohydrex PG is then blended into antiperspirant or deodorant formulations.

Applications:

• Medical: Occasionally used in dermatological products for excessive sweating (hyperhidrosis).
• Cosmetics: Primarily used in antiperspirants and deodorants for its effective sweat-blocking properties.

INCI Functions:

Deodorant agent. When substances that give off an unpleasant odour are included in cosmetic formulations (typical examples are methyl mercaptan and hydrogen sulphide derived from garlic), deodorants attenuate or eliminate the unpleasant exhalation.

CAS: 235433-35-9

Cosmetic safety

Restricted cosmetic ingredient as III/50 a Relevant Item in the Annexes of the European Cosmetics Regulation 1223/2009. Substance or ingredient reported: Aluminium zirconium chloride hydroxide complexes AlxZr(OH)yClz and the aluminium zirconium chloride hydroxide glycine complexes. 

Maximum concentration in ready for use preparation 20% (as anhydrous aluminium zirconium chloride hydroxide) 5.4% (as zirconium).

1. The ratio of the number of aluminium atoms to that of zirconium atoms must be between 2 and 10 2. The ratio of the number of (Al+Zr) atoms to that of chlorine atoms must be between 0.9 and 2.1 3. Not to be used in aerosols dispensers (sprays).