Science
Mechanism of Action
This weak acid engages with proteins within the stratum corneum, inducing a keratin-softening effect that aids in the detachment and shedding of dead keratinocytes. Concurrently, its inherent reducing antioxidant capacity allows it to scavenge free radicals, thereby contributing to the mitigation of oxidative damage.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Thiosalicylic acid, a weak acid with pKa values ranging from 3.501 to 4.05(0) at 20°C, is sensitive to air and light, which can lead to its degradation into dithiosalicylic acid. Optimal stability requires storage under inert gas in a cool, dark environment, ideally below 15°C or +30°C. It demonstrates slight solubility in water (increasing with temperature) and free solubility in various organic solvents.
Conflicts
- Exposure to air (forms dithiosalicylic acid)
- Light
- Ferric chloride (in alcoholic solution)
Safety
Safety Profile
No specific official safety assessments by regulatory bodies such as CIR, SCCS, or FDA for cosmetic applications of Thiosalicylic Acid have been identified. GHS hazard statements classify it as 'Skin Irrit. 2' (causes skin irritation) and 'STOT SE 3' (specific target organ toxicity, single exposure), indicating potential irritancy.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While offering potential as an exfoliant and antioxidant, the absence of official cosmetic safety assessments and specific clinical efficacy data makes its suitability for precision skincare currently uncertain.
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References
Sources