Lactic Acid/Glycolic Acid Copolymer

Lactic acid/glycolic acid copolymer is a synthetic polymer created by combining lactic acid and glycolic acid molecules. It is biodegradable and biocompatible, meaning the body can break it down safely over time. In skincare, it functions as a skin conditioning agent rather than as an active exfoliant like free lactic or glycolic acids.This ingredient is relatively uncommon in consumer skincare products, appearing in approximately 0.1% of formulations. It is typically incorporated into more specialised or advanced skincare systems where its structural properties are utilised for texture, st…

As a copolymer—a molecule made from two different building blocks—this ingredient differs fundamentally from free lactic or glycolic acids. Rather than dissolving on the skin to exfoliate, it remains largely intact and functions as a conditioning agent, helping to smooth and soften the skin's surface.In laboratory research, this copolymer has shown promise in advanced applications such as drug delivery systems and wound care, where its biodegradable nature and mechanical properties are valuable. However, in typical topical skincare, its role is more modest and focused on formulation texture…

Products containing this ingredient should be used as directed on the label. Because it is a conditioning agent rather than an exfoliant, it does not carry the same cautions as free hydroxy acids. It can be incorporated into daily routines without the need for gradual introduction or sun protection adjustments specific to this ingredient alone, though general daily SPF remains important.

This ingredient is generally well-tolerated due to its biodegradable and biocompatible nature. It is not a direct irritant like free lactic or glycolic acids and poses minimal risk of sensitivity in typical cosmetic concentrations.