What Is Bis-Diisopropanolamino-Pg-Propyl Dimethicone/Bis-Isobutyl Peg-14 Copolymer?
Bis-Diisopropanolamino-Pg-Propyl Dimethicone/Bis-Isobutyl Peg-14 Copolymer is a lab-made silicone-based polymer created by linking a modified dimethicone backbone with short polyethylene glycol (PEG) chains. Each repeating PEG unit averages 14 molecules long, giving the material a balanced mix of oil-like smoothness and light water affinity. The ingredient is sourced entirely from synthetic raw materials such as silica-derived silicones, propylene glycol, and isobutyl alcohol, so it does not rely on animal or plant harvesting.
Chemists first explored silicone-PEG hybrids in the late 1990s when brands searched for lighter conditioners that would not weigh hair down. By the early 2000s this specific copolymer gained traction because it spread easily, rinsed cleanly, and played well with both water and oil phases. Production involves controlled polymerization: the dimethicone segment is reacted with propylene glycol and diisopropanolamine to add anchor points, then grafted to PEG-14 chains, and finally neutralized to stabilize viscosity and pH.
You will most often find the copolymer in rinse-off and leave-in hair conditioners, smoothing serums, anti-frizz sprays, styling creams, deep-conditioning masks, and color-protection formulas. Formulators like it because it layers a breathable, silky film over each strand while holding fragrances and other actives in place without a greasy feel.
Bis-Diisopropanolamino-Pg-Propyl Dimethicone/Bis-Isobutyl Peg-14 Copolymer’s Cosmetic Benefits/Uses
This ingredient serves one main purpose in beauty products, yet that single role delivers several visible perks for hair health and styling.
Hair conditioning: The copolymer coats the hair shaft with an ultra-thin, flexible shield that smooths cuticles, reduces static, and helps strands glide past one another. As a result hair looks shinier, feels softer, detangles with less breakage, and resists humidity-induced frizz while still feeling light and bouncy.
Who Can Use Bis-Diisopropanolamino-Pg-Propyl Dimethicone/Bis-Isobutyl Peg-14 Copolymer
This silicone-PEG hybrid is considered gentle enough for all scalp and hair types including fine, thick, straight, wavy and textured strands. Because it forms a breathable film that rinses cleanly it is unlikely to weigh hair down or clog pores, so even people with oil-prone or sensitive scalps can generally use it without trouble. Those following a “silicone-free” routine or dealing with severe product-build-up concerns may prefer to skip it as the ingredient does rely on silicones for its smoothing effects.
The copolymer is entirely synthesized from mineral-based raw materials and does not involve animal derivatives or animal testing policies beyond regulatory requirements, so it is suitable for vegans and vegetarians.
No reproductive toxicity has been linked to topical use of this material and it does not penetrate deeply into skin, which makes it acceptable for most pregnant or breastfeeding users. This is not medical advice and anyone expecting or nursing should still check with a healthcare professional before introducing new products.
The ingredient is not known to cause photosensitivity and it has no special storage or daylight restrictions. It also plays well with common colorants, fragrances and styling polymers so formulation interactions are minimal.
Potential Side Effects/Adverse Reactions
Responses to Bis-Diisopropanolamino-Pg-Propyl Dimethicone/Bis-Isobutyl Peg-14 Copolymer can differ from one person to the next. The points below outline potential effects that might occur, though they are uncommon when the ingredient is used at typical cosmetic levels.
- Mild scalp or skin irritation
- Allergic contact dermatitis in individuals already sensitized to silicones or PEGs
- Temporary eye stinging if product accidentally enters the eyes
- Heavy or limp hair feel when applied excessively or not rinsed fully
- Product build-up on hair shafts after prolonged daily use without clarifying washes
If any discomfort or unexpected reaction occurs discontinue use immediately and seek advice from a qualified healthcare provider.
Comedogenic Rating
Rating: 1/5. This ingredient is a large silicone-PEG polymer that tends to sit on the surface of hair and skin rather than seeping into pores. Its breathable film is lightweight and easily washed away with regular cleansing so it is unlikely to trap oil or debris long enough to trigger clogged pores. People who are prone to acne or breakouts can usually use products containing this copolymer without added risk, especially in rinse-off formulas. In rare cases heavy leave-in use combined with inadequate cleansing could contribute to buildup, though this is uncommon.
Summary
Bis-Diisopropanolamino-Pg-Propyl Dimethicone/Bis-Isobutyl Peg-14 Copolymer is a lab-crafted silicone-PEG hybrid that conditions hair by forming a thin flexible coating that smooths cuticles, cuts static and locks in softness while still rinsing clean. It shows up most often in lightweight conditioners, serums and anti-frizz sprays where a non-greasy feel is prized, yet it is not as widely used as classic dimethicone so its presence is still more niche than mainstream.
Current safety reviews find it non-sensitizing, non-toxic and generally well tolerated in cosmetic concentrations. As with any new product it is wise to perform a quick patch test to rule out personal sensitivities before full use.