Back to Ingredient Dictionary

QUATERNIUM-15

Description

Quaternium-15, also known as hexamethylenetetramine chloroallyl chloride, is a quaternary ammonium compound widely used in personal care products and cosmetics. This synthetic preservative acts as an antimicrobial agent, effectively inhibiting the growth of bacteria and fungi in various formulations.

The ingredient functions by releasing formaldehyde in small amounts over time, which provides broad-spectrum protection against microbial contamination. Its efficacy in low concentrations makes it a cost-effective choice for manufacturers. Quaternium-15 is particularly useful in water-based products such as shampoos, conditioners, and lotions, where microbial growth is more likely to occur.

While effective as a preservative, Quaternium-15 has faced scrutiny due to its formaldehyde-releasing properties. Formaldehyde is a known allergen and potential carcinogen, leading some regulatory bodies to restrict its use. In the European Union, Quaternium-15 is banned in cosmetics and personal care products. In other regions, its use is limited to specific concentrations.

Formulators considering Quaternium-15 should weigh its preservative efficacy against potential safety concerns and regulatory restrictions. Alternative preservatives may be preferable for products marketed as hypoallergenic or for consumers with sensitive skin.