Chloroacetic Acid

Chloroacetic acid is a synthetic organic compound used in skincare as a keratolytic agent. It works by breaking down the proteins that hold dead skin cells together, effectively dissolving the outermost layer of the epidermis. This makes it a chemical exfoliant, distinct from physical scrubs.In cosmetic formulations, it appears in peels and targeted treatments designed to improve skin texture and clarity. It is a stronger exfoliant than some alternatives and requires careful formulation and use.

Chloroacetic acid dissolves the desmosomes—the protein structures that bind skin cells together—allowing dead cells to shed more readily. This accelerates the natural exfoliation process, which in turn signals the skin to produce fresh cells and can stimulate collagen and elastin remodelling over time.Because it works at the chemical level rather than through physical friction, it can provide a more uniform exfoliation than manual methods. However, this also means it requires careful pH buffering and concentration control to minimise irritation.

Chloroacetic acid products are typically applied as directed—often as a short-contact peel left on the skin for a defined period before rinsing. Start with the lowest recommended concentration and frequency to assess tolerance, as overuse can compromise the skin barrier. Always follow product instructions carefully, use sunscreen daily afterwards, and allow adequate recovery time between applications. Avoid use if your skin is compromised or inflamed.

Chloroacetic acid can cause irritation, redness, and sensitivity, particularly at higher concentrations or with frequent use. Those with sensitive or barrier-compromised skin should approach with caution and patch test first. Professional-grade peels should be administered by trained practitioners.