INCI Name: Bis-Aminopropyl Dimethicone
Appearance: Clear to slightly hazy viscous fluid
Solubility: Dispersible in some lightweight oils and silicones; requires emulsification for water-based formulations
Usage Rate: 0.5% – 5%
Function: Hair conditioning, frizz control, heat protection, color retention
Bis-Aminopropyl Dimethicone is an amine-functional silicone designed to provide exceptional conditioning, long-lasting softness, and frizz control to hair without heavy buildup. It is ideal for both rinse-off and leave-in hair care products seeking a smooth, silky finish with enhanced manageability.
This high-performance conditioning silicone is widely used in professional hair care formulations due to its strong affinity for damaged or color-treated hair. Unlike non-functional silicones, its amine groups allow it to bond to the hair shaft, creating a protective, conditioning layer that doesn’t easily wash away. It delivers lasting softness and shine, while helping defend hair from heat styling and environmental stressors.
It’s an amine-functional silicone — meaning it carries a slight positive charge that binds to damaged hair and porous surfaces. Unlike plain dimethicone, it gives long-lasting conditioning, frizz control, and shine that survives several washes.
Its cationic ends bond to hair cuticles, smoothing rough areas, sealing split ends, and improving combability even after rinsing. That’s why it’s found in premium masks, serums, and “anti-frizz” finishing treatments.
Both are amine-functional silicones, but Bis-Aminopropyl Dimethicone gives a stronger, longer-lasting conditioning film and more intense frizz control. Amodimethicone is slightly lighter and often used when a softer, less build-up prone effect is wanted. Formulators choose Bis-Aminopropyl Dimethicone for rich masks and smoothing systems, and Amodimethicone for lightweight or daily-use products.
Yes. Its positive charge seeks out damaged, negatively charged hair areas, filling in rough spots, reducing breakage, and creating a silky, resilient feel.
No. It’s a hydrophobic silicone fluid. For water-based systems, it needs to be emulsified (often with cationic or nonionic emulsifiers) to remain stable and deliver conditioning evenly.
It’s heavier than Amodimethicone or lightweight esters. In fine hair, too much can feel coated. Using lower percentages or pairing with volatile silicones (like cyclopentasiloxane) keeps the finish smooth but not greasy.
Usually 0.5–3% in conditioners, masks, or styling serums. Higher levels give more intense smoothing but may feel heavy on thin hair.
Yes. It forms a durable film that helps limit moisture loss and thermal damage during blow-drying and heat styling.
Yes. Its stronger cationic binding gives more durable smoothing than non-functional silicones or light esters, helping results survive shampooing.
Yes. It adheres well to wet hair, so it keeps conditioning benefits even after rinsing, unlike plain dimethicone that mostly washes off.
Yes. Blending it with heavy oils creates a smoother, drier afterfeel and better combability without leaving a greasy residue.
Bis-Aminopropyl Dimethicone needs proper emulsification (often with BTMS or nonionic emulsifiers). Adding it directly without an emulsifier leads to separation.
