Thioglycolic Acid 80% – Hair Perming & Straightening Active (Cosmetic Grade)

Thioglycolic Acid 80% is the chemistry behind every permanent wave and professional straightening treatment — the active ingredient that makes hair genuinely, lastingly transformable. An organic acid with a reactive thiol (-SH) group, it works by selectively breaking the disulfide bonds (S-S) that give hair keratin its natural shape and structural rigidity. Once those bonds are broken, hair becomes pliable and can be physically reshaped — wound around rods for curls, or mechanically straightened — before a neutralizer reforms the bonds in the new configuration, locking the result in place permanently.

At 80% concentration, this is a professional-grade active intended for experienced formulators and salon-grade product development. It is the foundational reducing agent in perm solutions and chemical relaxers worldwide, valued for its reliable, controllable action and well-established safety profile when used correctly within formulated systems. For cosmetic chemists developing hair restructuring products, Thioglycolic Acid 80% is an essential, irreplaceable raw material.

⚠️ Professional Use Only: This is a highly active chemical ingredient. Always use appropriate dilution, follow regulatory and safety guidelines, and formulate correctly before use. Not for direct application. Perform patch testing where applicable.

Key Benefits

• Hair Restructuring Active – breaks disulfide bonds in hair keratin to enable permanent reshaping (curling or straightening)
• Essential for Perms & Relaxers – the foundational active in professional perm solutions and chemical straightening systems
• Strong, Controlled Reducing Agent – reliable, predictable action for professional hair treatment formulations
• Long-Lasting Results – enables permanent structural changes to hair that last until new growth

Applications

• Hair perming solutions & waving lotions
• Hair straightening & chemical relaxing treatments
• Salon-grade professional hair restructuring products
• Chemical processing applications

How It Works

Thioglycolic Acid functions as a reducing agent in a two-step hair restructuring process. In Step 1 (reduction), the thiol (-SH) groups break the disulfide bonds (S-S) in hair keratin — the bonds responsible for hair’s natural shape. With these bonds broken, hair becomes soft and pliable, allowing it to be physically reshaped. In Step 2 (neutralization/oxidation), a neutralizer (typically hydrogen peroxide or sodium bromate) reforms the disulfide bonds in the new configuration, permanently locking the curl or straight shape in place.

Recommended Usage

Note: Must be correctly diluted, pH-adjusted, and formulated before use. Follow applicable cosmetic regulations for maximum permitted concentrations in finished products.

Technical Profile

• INCI: Thioglycolic Acid
• Concentration: 80%
• Appearance: Clear to slightly yellow liquid
• Type: Organic acid / reducing agent
• Function: Hair restructuring active, disulfide bond reducer
• Origin: China
• Grade: Cosmetic