LACTIDE

About LACTIDE

The cyclic dimer of lactic acid, used as a gentle exfoliant and skin conditioning agent in cosmetics. It is biodegradable, biocompatible, and produces lactic acid on the skin surface for mild chemical exfoliation.

Detailed Analysis

Lactide is the cyclic diester (dilactone) of lactic acid, with the formula C6H8O4. It is produced industrially by the depolymerization of lactic acid under controlled conditions. In cosmetic formulations, lactide hydrolyzes slowly on the skin surface to release lactic acid, which acts as a mild alpha-hydroxy acid (AHA) exfoliant. This gentle exfoliation helps remove dead skin cells, brighten skin tone, and improve texture. Lactide-based polymers are also used in biodegradable medical devices. As a skin conditioning abrasive, it provides a gentler alternative to harsher physical or chemical exfoliants.

What It Does

Skin Benefits

• ✓ Mild AHA exfoliation (via lactic acid release)
• ✓ Skin brightening and tone evening
• ✓ Improved skin texture
• ✓ Biodegradable and biocompatible
• ✓ Gentler than many other exfoliating agents

Known Concerns

• ⚠ May cause mild tingling or irritation in sensitive skin, particularly at higher concentrations
• ⚠ AHAs increase sun sensitivity — sunscreen use recommended during daytime application

References