Hair Conditioning
DISOYAMINE
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A soy-derived secondary fatty amine — conditioning agent with nitrosamine-formation concerns in unformulated systems.
Disoyamine (CAS 68783-23-3) is a secondary amine derived from hydrogenated soybean fatty acids. In cosmetics it serves as a cationic conditioning intermediate and anti-static agent. As a secondary amine it can, under certain formulation conditions (presence of nitrite or N-nitrosating agents), form N-nitrosodialkylamines — a flag the SCCS applies to fatty secondary/tertiary amines generally. CIR has reviewed related fatty amines with restrictions on nitrosating conditions. Aquatic toxicity of long-chain fatty amines is elevated. Properly formulated and quenched, it can be used safely, but the raw ingredient warrants caution.
Skin benefits
- Cationic conditioning agent derived from soy fatty amines
- Hair-softening and anti-static
- Used as intermediate for milder surfactants
Known concerns
- Long-chain secondary fatty amines can form trace nitrosamines in formulation
- Possible skin and eye irritation at higher levels
- Biodegradability and aquatic-toxicity concerns typical of fatty amines
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related hair conditionings
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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.