Reducing Agent
SODIUM OXYMETHYLENE SULFOXYLATE
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A strong reducing agent (Rongalite) used to remove color or stabilize against oxidation. Of concern in cosmetics because it can release formaldehyde on decomposition and is highly reactive.
Function
Skin benefits
- Reducing agent for color removal
- Antioxidant in oxidation-sensitive systems
- Stabilizer in some hair treatments
Known concerns
- Releases formaldehyde on decomposition (regulated as a formaldehyde-releaser)
- Strong reducing agent — reactive in some formulations
- EU Annex II/III restrictions for related sulfoxylates
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related reducing agents
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.