Ingredient review
Bis-Hydroxypropyl Dimethicone
INCI: Bis-Hydroxypropyl Dimethicone
A gentle silicone that improves product feel and skin softness, widely considered safe and non-irritating for most skin types.
In plain English
Bis-Hydroxypropyl Dimethicone is a type of silicone that is modified to be more water-friendly than traditional dimethicone. In skincare, it acts as a smooth, silky emollient that helps products glide on easily and leaves a soft, non-greasy finish. It also forms a light, breathable film on the skin that can help lock in moisture and improve the feel of other ingredients. Because it is modified, it is less likely to cause buildup or feel heavy, making it a popular choice in lightweight moisturizers, primers, and sunscreens.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Bis-Hydroxypropyl Dimethicone is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Bis-Hydroxypropyl Dimethicone.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A synthetic silicone polymer with hydroxypropyl groups attached, making it more compatible with water and other polar ingredients than standard dimethicone.
How it works
It spreads easily across the skin, forming a thin, flexible film that reduces water loss (a gentle occlusive effect) while providing a silky, smooth feel. Its modified structure also helps it blend well with other ingredients, improving the overall texture and application of a product.
Pros
Silky, non-greasy feel
Leaves skin feeling soft and smooth without a heavy or oily residue, making it ideal for daytime use and under makeup.
Improves product texture
Helps creams and serums spread more evenly and reduces the sticky or tacky feeling some ingredients can leave behind.
Cons and cautions
Synthetic origin
As a lab-made silicone, it may not appeal to those seeking a fully natural or minimalist ingredient list.
Potential for buildup
While less likely than standard dimethicone, repeated use without proper cleansing could lead to a slight film on the skin or hair.
Best for
- Anyone looking for a lightweight, non-greasy moisturizer or primer
- People with normal to oily skin who want a smooth finish without clogging pores
Use caution if
- Those who strictly avoid all synthetic silicones in their routine
Usage tips
Safety summary
Bis-Hydroxypropyl Dimethicone is considered safe for use in cosmetics. It has low irritation and comedogenic potential, and no significant safety concerns have been raised by regulatory bodies or dermatological reviews.
Research notes
Safety assessments of modified silicones, including this ingredient, have found them to be non-irritating, non-sensitizing, and safe for topical use. Research primarily focuses on their sensory and formulation benefits rather than active skin benefits.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics globally, including by the FDA (USA) and EU CosIng database, with no known restrictions at typical use levels.
- Common uses
- Moisturizers, Serums, Primers, Sunscreens, Hair Conditioners
- Environmental note
- Modified silicones like this one are generally considered to have lower environmental persistence than some traditional silicones, though they are still synthetic compounds.
Good to know
- This silicone is often used in 'water-in-silicone' emulsions, which can feel very lightweight and absorb quickly.
- It is considered biodegradable and less persistent in the environment compared to some older silicones.
Common questions
What is Bis-Hydroxypropyl Dimethicone in beauty products?
Bis-Hydroxypropyl Dimethicone is a type of silicone that is modified to be more water-friendly than traditional dimethicone. In skincare, it acts as a smooth, silky emollient that helps products glide on easily and leaves a soft, non-greasy finish. It also forms a light, breathable film on the skin that can help lock in moisture and improve the feel of other ingredients. Because it is modified, it is less likely to cause buildup or feel heavy, making it a popular choice in lightweight moisturizers, primers, and sunscreens.
What does Bis-Hydroxypropyl Dimethicone do in a beauty product?
It spreads easily across the skin, forming a thin, flexible film that reduces water loss (a gentle occlusive effect) while providing a silky, smooth feel. Its modified structure also helps it blend well with other ingredients, improving the overall texture and application of a product.
Is Bis-Hydroxypropyl Dimethicone safe for most people?
Bis-Hydroxypropyl Dimethicone is considered safe for use in cosmetics. It has low irritation and comedogenic potential, and no significant safety concerns have been raised by regulatory bodies or dermatological reviews.
Who should be careful with Bis-Hydroxypropyl Dimethicone?
Those who strictly avoid all synthetic silicones in their routine
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.