Product Overview
S18 is a multifunctional hair care active ingredient (INCI: Stearamidopropyl Dimethylamine) that delivers exceptional conditioning and repair benefits through its unique pH-dependent properties. This light yellow flaky solid (92-98% C18 chain purity) functions as a non-ionic surfactant in alkaline conditions and transforms into a powerful cationic conditioner in acidic environments, offering formulators unparalleled versatility in hair care systems.
Performance Advantages
Hair Conditioning
Improves wet combing by 60% (vs. untreated hair)
Reduces static by 70% (triboelectric testing)
Enhances dye uptake by 25% in color formulations
INCI name:
Stearamidopropyl Dimethylamine
Product features and efficacy
| physical property | data |
| appearance | Light yellow flaky solid |
| PH Value(1.0% aqueous solution) | 7.0-10.0 |
| Carbon chain length(GC)C18 | 92-98% |
| Acid Value (mg KOH/g) | Max.4.0 |
| Amine Value mg (KOH/g) | 150-160 |
Formulation Benefits
Dual-functionality simplifies pH adjustment
Acts as co-emulsifier (HLB 8-10)
Cold-process compatible (<45°C)
Recommended Applications
Conditioners (1-3%):
Adjust to pH 4.5-5.5 for cationic activation
Synergizes with behentrimonium chloride
Color Systems (0.5-2%):
Improves dye uniformity
Reduces damage during oxidative processing
Styling Products (0.5-1.5%)
Enhances fiber alignment
Provides heat protection up to 180°C
Packaging & Storage
25kg/ paper bags
24-month stability at <30°
Protect from moisture
Market Differentiation
- Cost-Efficient: Replaces 3 ingredients (conditioner + emulsifier + antistatic)
- Salon-Proven: 92% stylist preference in clinical trials
- Clean Beauty: Compatible with sulfate-free formulations
Why Choose S18?
Proven Performance: Increases hair diameter by 15% (SEM analysis)
Process Flexible: No heating required for activation
Global Compliance: Meets EU, US, and China cosmetic regulations
Usage Guidelines
- For Conditioners:
Disperse in warm water (50°C), then add to phase B
Final PH adjustment triggers cationic activity
2.For Creams:
Use 0.5-1% as co-emulsifier
Enhances silicone spreadability
