Stearamidopropyl Dimethylamine (S18)
Stearamidopropyl dimethylamine is used in shampoos or hair conditioners due to its antistatic effect. It serves as a mild surfactant that removes dirt build-up from the hair. It imparts a soft and silky feel to the hair, making it easier to comb through. It possesses a positive charge which can help offset the negative charge from shampooing the hair and is a cheaper alternative to other conditioners. It does not suppress foam and can be used with anionic surfactants and also helps to build the viscosity of the formulation. It is generally used at a maximum concentration of 0.01%-5%.
Stearamidopropyl Dimethylamine is a multifunctional ingredient, a hair-conditioning agent, thickener, and emollient that appears as white to yellowish flakes. Incorporated in hair care applications, it improves wet and dry combing, polishes hair shine, reduces hair frizzy, and provides volume.
Ideal ingredient for stable and prosperous creamy formulations, Stearamidopropyl Dimethylamine is compatible with anionic surfactants, provides a superior antistatic effect, and is effective with other quaternary salts. After neutralization with an acid, it is an effective conditioning agent and can deliver a highly viscous conditioning system with good stability under high and freeze temperatures.
In hair cleansing applications, Stearamidopropyl Dimethylamine is compatible with some anionic surfactants and increases viscosity. It improves the wet feeling and conditioning effects of shampoo, as well. In coloration products, Stearamidopropyl Dimethylamine contributes as an emulsifier or thicker.
Improving the sensory profile of hair conditioning products, Stearamidopropyl Dimethylamine delivers better smoothness and combing performance in the case of dry hair. It is a safe, effective, and readily biodegradable ingredient.
Key Technical Parameters
| Appearance | Light yellowish flake |
| PH Value（1.0%） | 7.0-10.0 |
| C18 | 92-98% |
| Acid Value （mg KOH/g） | 4.0 max |
| Amine Value（mg KOH/g） | 150-160 |
Applications
● Hair care products: conditioner, shampoo
● Hair dye products: permanent hair dye cream, complementary hair mask
● Skin care products: creams, lotions
Advantages
● Antistatic properties
● Conditioning surfactant
● Enhance the emulsifying property
● Improve dyeing uniformity and enhance color intensity
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