What Is Bis-Diisopropanolamino-Pg-Propyl Disiloxane/Bis-Vinyl Dimethicone Copolymer?
Bis-Diisopropanolamino-Pg-Propyl Disiloxane/Bis-Vinyl Dimethicone Copolymer is a lab-made silicone polymer that combines two familiar silicone backbones: vinyl dimethicone and disiloxane. Chemists attach a special side chain that contains diisopropanolamine and propylene glycol, giving the finished material a gentle, water-friendly character. Silicones first appeared in beauty products in the 1950s for their silky feel and shine. As formulating know-how grew, companies began modifying basic silicone oils to improve spreadability and rinse-off behavior, which led to multifunctional hybrids like this copolymer.
The ingredient is produced through controlled reactions called hydrosilylation and polymer end-capping. In simple terms, small vinyl-terminated silicone units are linked together, then the amino-and-polyol-rich groups are attached at the ends. The result is a smooth, flexible polymer that deposits easily on hair but does not build up as heavily as older silicone oils.
You will mainly spot Bis-Diisopropanolamino-Pg-Propyl Disiloxane/Bis-Vinyl Dimethicone Copolymer in rinse-off and leave-in hair care such as shampoos, daily conditioners, deep-treatment masks, anti-frizz serums, heat-protective sprays and styling creams that promise softness and shine. It can also turn up in hybrid products like cleansing conditioners or hair primers where a lightweight conditioning touch is needed.
Bis-Diisopropanolamino-Pg-Propyl Disiloxane/Bis-Vinyl Dimethicone Copolymer’s Cosmetic Benefits/Uses
This ingredient serves one key purpose in cosmetic formulas, and that single role delivers several noticeable perks for hair care users.
Hair conditioning: The copolymer forms a feather-light film along the hair shaft that smooths the cuticle, reducing friction and tangles. Because the ends of the molecule carry mildly hydrophilic groups, it rinses cleaner than classic dimethicone yet still leaves behind enough silicone to boost slip, shine and softness. The film also helps seal in moisture and offers a bit of protection against heat styling so hair feels silkier and looks glossier after each wash.
Who Can Use Bis-Diisopropanolamino-Pg-Propyl Disiloxane/Bis-Vinyl Dimethicone Copolymer
This silicone polymer is considered gentle enough for all skin and scalp types, including dry, normal, oily and sensitive. Because it is non-occlusive and rinses more cleanly than heavier silicones, it typically suits those prone to buildup or an oily scalp just as well as it does people seeking extra softness for dry, porous hair. There are no specific skin or hair conditions that make it unsuitable, though individuals with a known sensitivity to silicones in general may prefer to avoid it.
The ingredient is fully synthetic and made without animal-derived raw materials so it aligns with vegan and vegetarian lifestyle choices provided the finished product is certified cruelty-free by the brand.
Current safety assessments find no evidence of systemic absorption, toxicity or endocrine action, which means products containing this polymer are generally viewed as safe for use during pregnancy and breastfeeding. This is not medical advice and anyone who is pregnant or nursing should check with their healthcare provider before starting a new cosmetic product, just to be on the safe side.
The molecule does not sensitize skin to sunlight and will not increase the risk of sunburn. It is also fragrance-free and carries no known concerns for those avoiding essential oils or common allergens.
Potential Side Effects/Adverse Reactions
Side effects and reactions to topical Bis-Diisopropanolamino-Pg-Propyl Disiloxane/Bis-Vinyl Dimethicone Copolymer can vary from person to person. The points below outline potential, though uncommon, reactions. When formulated and used correctly most people experience none of these issues.
- Mild scalp or skin irritation
- Eye stinging or watering if the product accidentally runs into the eyes while rinsing
- Contact dermatitis in individuals already sensitized to silicones
- Temporary limp or weighed-down hair if overused without adequate cleansing
- Acne breakouts around the hairline for those extremely prone to follicular clogging
If any irritation or other negative reaction occurs stop using the product and consult a medical professional for guidance.
Comedogenic Rating
Rating: 1/5. Bis-Diisopropanolamino-Pg-Propyl Disiloxane/Bis-Vinyl Dimethicone Copolymer sits at the low end of the scale because its large silicone structure stays mostly on the surface and is designed to rinse away better than heavier oils. It does not penetrate deeply into pores or create an occlusive seal that traps sebum. For most acne-prone users this means a minimal risk of clogging, though extremely sensitive individuals may still notice the occasional breakout if residue builds up. Since it is a lightweight film former it is generally suitable for people who are prone to acne or breakouts. One extra point: buildup is more likely if you layer multiple silicone products without regular cleansing, so keeping a balanced wash routine further reduces any chance of congestion.
Summary
Bis-Diisopropanolamino-Pg-Propyl Disiloxane/Bis-Vinyl Dimethicone Copolymer is a modern silicone hybrid that conditions hair by forming a thin, smooth coating that decreases friction, boosts shine and offers light heat protection. Its water-friendly side chains help it spread evenly then rinse cleaner than classic dimethicone, delivering softness without heavy buildup.
Although not as universally used as plain dimethicone it is gaining traction in shampoos, conditioners and styling products aimed at consumers who want the slip of silicones with an easier washout.
Current data shows the ingredient is non-toxic, non-sensitizing and carries a very low comedogenic rating, so most people can use it safely. As with any new cosmetic, patch testing a small area before full use is a smart way to make sure your skin or scalp agrees with it.