Common Name(s): Soyaminopropylamine,soy fatty aminopropylamine,propylamine soy derivative

DESCRIPTION

What It Does: Conditions hair and reduces static while providing mild emulsification.

Why It's Used: A diamine (primary + secondary amine) structure from soy fatty chains providing cationic conditioning at low ph; soy-derived fatty chains provide skin/hair affinity.

How It Works: The aminopropyl diamine structure provides two basic nitrogen sites; at low ph (hair care typical), the amines are protonated providing cationic character and adsorption to negatively charged hair; soy fatty chain provides hydrophobic anchoring.

Typically Found In: Conditioning shampoos,hair conditioners,antistatic hair products

TECHNICAL DETAILS

Primary Category: Functional ingredient – antistatic

Secondary Functions: Hair conditioning,emulsifying

Application Areas:

Typical Concentration Range: 0.5%–3%

SOURCING & ETHICS

Vegan Status: Yes

Halal Status: Yes

Source Notes: Soy fatty amines from glycine max; propylamine synthetic; semi-natural.

SKIN COMPATIBILITY

Irritancy Rating: 1/5 – very low

Comedogenicity Rating: 1/5 – low

Sensitivity Concerns: Generally well tolerated; mild amine character.

Safe for Sensitive Skin: Yes

SAFETY & COMPATIBILITY

Safety Profile: Good safety profile. ewg score: 1–2.

Works Well With: Cationic conditioners,amphoteric surfactants,silicones

Avoid Combining With: Avoid high concentrations with strong anionic surfactants

SCIENTIFIC NOTE

Fatty aminopropylamine derivatives (tallow, soy, coco variants) are used as mild cationic conditioners; diamine structure provides stronger adsorption to hair than monoamine analogs; soy source provides a sustainable plant-origin alternative to tallow versions.

Last Verified: 2026-03-27

Primary Sources: Cosing database,inci dictionary