Science
Mechanism of Action
When applied to the skin, sodium trichloroacetate is expected to release trichloroacetic acid (TCA) and sodium ions. TCA's mechanism involves the chemical coagulation of proteins within the epidermis and, at higher concentrations, the dermis. This controlled protein precipitation and cell coagulative necrosis lead to visible 'frosting' of the skin, promoting the shedding of dead skin cells, stimulating new cellular growth, enhancing reepithelialization, and inducing neocollagenesis for improved skin texture and reduced stratum corneum thickness.
Research
Clinical Evidence
High confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Sodium trichloroacetate is stable under dry conditions; however, it decomposes in aqueous, strongly alkaline environments. It also degrades when heated above 165°C and reacts with caustic alkalis to form chloroform and alkali carbonate. Its conjugate acid, trichloroacetic acid, has a pKa of 0.7, indicating it is largely ionized at skin pH.
Conflicts
- strong bases
- caustic alkalis
Safety
Safety Profile
Sodium trichloroacetate lacks clear FDA cosmetic use status, though it possesses a UNII. Its prior registration as an herbicide has been cancelled, and there are no direct CIR or SCCS safety assessments for cosmetic applications. The substance is described as irritating to the eyes, skin, and respiratory tract. While some data suggests it is 'only slightly irritating to the skin,' its conjugate acid, TCA, is corrosive. It can decompose at elevated temperatures, releasing potentially harmful gases like hydrogen chloride, and reacts with strong bases to yield chloroform. An 'H' notation signifies that skin contact may contribute substantially to systemic toxicity.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While its active form, trichloroacetic acid, is highly effective in professional-grade chemical peels across various depths, sodium trichloroacetate presents significant safety and regulatory concerns, including potential for high irritation and systemic toxicity via skin contact, precluding its general use in cosmetic formulations without strict oversight.
Related
Similar Ingredients
Finding similar ingredients…