Best For Skin Types
All
Addresses
Usage Frequency
Daily
What Is Bis-Aminopropyl Dimethicone?
Bis-Aminopropyl Dimethicone is a silicone-based conditioning ingredient derived from dimethicone, a widely used polymer in cosmetics. It belongs to a class of modified silicones that have been chemically altered to include amino groups, which allow it to bond more effectively to hair and skin surfaces.
In skincare formulations, it functions primarily as a conditioning and smoothing agent. Its chemical structure allows it to deposit onto the skin or scalp, creating a light protective layer that can improve texture and reduce friction between hair fibres or on the skin surface.
How It Works
Bis-Aminopropyl Dimethicone works through a combination of physical and chemical mechanisms. The amino groups in its structure allow it to form weak ionic bonds with the negatively charged keratin proteins found in hair and the outer layer of skin. This enables the ingredient to adhere more strongly than unmodified silicones, creating a more durable conditioning film.
Once in place, this film smooths the cuticle layer of hair or the surface of skin, reducing light scattering and creating a visibly smoother appearance. It also reduces friction, which can help minimise tangles and improve the combing experience without leaving a heavy residue.
Clinical Evidence & References
Research specifically on Bis-Aminopropyl Dimethicone in skincare is limited. Most published studies focus on its use in hair care products, where it has been shown to improve combability, reduce frizz, and enhance shine when used in shampoos and conditioners.
In skincare, evidence for this ingredient is largely based on its chemical properties and decades of safe use in cosmetic formulations. It is generally considered well-tolerated and non-irritating, though large-scale clinical studies comparing it to other conditioning silicones in skincare products are sparse. Its benefits are primarily sensory rather than therapeutic.
How to Use
This ingredient is typically formulated into leave-in or rinse-off products. In rinse-off formulations (such as cleansers or conditioners), allow contact time of one to five minutes before rinsing thoroughly. In leave-in products, apply to damp hair or skin and style as usual. A small amount goes a long way; start with a pea-sized amount to avoid over-coating. If used in combination with other silicones, monitor for any buildup over time, particularly in areas prone to sensitivity.
Safety & Precautions
Frequently Asked Questions
From the Clinic
Not sure what your skin actually needs?
Two minutes, a few questions, and we’ll point you at what matters — no guesswork.
Take the skin quizRelated Ingredients
Aminoethylaminopropyl Dimethicone
A silicone derivative that helps powders and pigments spread evenly without clumping
Aminopropyl Dimethicone
A silicone polymer that conditions and smooths the hair fibre
Amodimethicone
A silicone polymer that conditions and smooths hair whilst reducing static
Bis-Cetearyl Amodimethicone
A silicone conditioning agent primarily used in hair and scalp formulations
Bis-Hydroxy/Methoxy Amodimethicone
A silicone-based conditioning agent that smooths and protects hair fibre
Bis-Hydroxyethoxypropyl Dimethicone
A silicone emollient that creates a smooth, non-greasy feel on skin
Learn More About Skincare Ingredients
Explore our comprehensive ingredient glossary to understand what's in your products.
Browse All IngredientsShop Our Products
Find professional skincare solutions at Skintique.