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Thioglycolic Acid

Hospital de Clinicas de Porto Alegre · FDA-approved active Small molecule

Thioglycolic acid is a reducing agent that breaks disulfide bonds in keratin, softening and dissolving hair for depilation.

Thioglycolic acid is a reducing agent that breaks disulfide bonds in keratin, softening and dissolving hair for depilation. Used for Hair removal / depilation.

At a glance

Generic nameThioglycolic Acid
SponsorHospital de Clinicas de Porto Alegre
Drug classChemical depilatory / keratolytic agent
TargetDisulfide bonds in keratin protein
ModalitySmall molecule
Therapeutic areaDermatology
PhaseFDA-approved

Mechanism of action

Thioglycolic acid works by cleaving the disulfide bonds (S-S linkages) that cross-link and stabilize the keratin protein structure in hair. This chemical reduction weakens the hair shaft, causing it to soften and dissolve, allowing it to be wiped away. The mechanism is pH-dependent and requires an alkaline environment (typically provided by calcium thioglycollate formulations) to be effective.

Approved indications

Common side effects

Key clinical trials

Primary sources

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SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

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