What Is Cetyl Hexacosyl Dimethicone/Bis-Vinyldimethicone Crosspolymer?
Cetyl Hexacosyl Dimethicone/Bis-Vinyldimethicone Crosspolymer is a silicone based ingredient created by chemically linking two different silicones: Cetyl Hexacosyl Dimethicone, which carries long fatty chains, and Bis-Vinyldimethicone, a fluid silicone elastomer. The result is a three-dimensional polymer network that feels light and velvety on the skin. Manufacturers typically start with the two parent silicones, add a catalyst and heat the mixture so the molecules bond into a soft gel-like solid. Once formed, the polymer is milled into a fine powder or dispersed in lightweight silicone fluids, making it simple to blend into finished formulas.
Silicone chemistry has been used in cosmetics since the 1950s for its silky touch and water resistance. Crosslinked silicone powders like this one became popular in the late 1990s when brands searched for fillers that blur fine lines without a heavy feel. Today you will spot Cetyl Hexacosyl Dimethicone/Bis-Vinyldimethicone Crosspolymer in moisturizers, primers, color-correcting creams, sunscreens, anti-aging serums, sheet mask essences and even some hair-smoothing creams. Its unique structure lets it sit on the surface, improving texture and spreadability while locking in moisture.
Cetyl Hexacosyl Dimethicone/Bis-Vinyldimethicone Crosspolymer’s Cosmetic Benefits/Uses
This ingredient is prized for the way it enhances both the feel and performance of skincare and makeup.
- Skin conditioning: Forms a breathable film that helps soften and smooth the skin surface, leaving it feeling silky and reducing the appearance of fine lines
- Emollient: Fills the gaps between skin cells to reinforce the skin barrier, boosts moisture retention and gives formulas a cushiony glide for effortless application
Who Can Use Cetyl Hexacosyl Dimethicone/Bis-Vinyldimethicone Crosspolymer
This silicone suits almost every skin type. Dry, normal and combination complexions benefit most from its moisture-locking film and silky afterfeel, while oily or acne-prone skin can usually tolerate it because it is lightweight and non-greasy. People with very congested or extremely sensitive skin might prefer to limit heavy silicone layers, though reactions are rare.
The polymer is entirely synthetic, so it is acceptable for vegans and vegetarians as long as the finished product has not been tested on animals. Always check a brand’s cruelty-free policy to be sure.
Current safety data show no issues for pregnancy or breastfeeding. Still, this is not medical advice and anyone who is pregnant or nursing should review all skincare products with a qualified healthcare provider.
The ingredient does not make skin more sensitive to sunlight and there are no known interactions with UV filters or other common actives.
Potential Side Effects/Adverse Reactions
Individual responses vary, so the effects below are possibilities rather than expectations. When the ingredient is included at typical cosmetic levels most users experience none of these issues.
- Mild skin irritation – rare itching or redness, usually in people already prone to silicone sensitivity
- Contact dermatitis – very uncommon allergic reaction that resolves after discontinuation
- Worsening of existing breakouts – a handful of acne-prone users report that occlusive layers trap oil and debris leading to clogged pores
- Product pilling – not a health risk but the powdery texture can cause flaking when layered with some water-based formulas
If any uncomfortable reaction occurs stop using the product and consult a healthcare professional if symptoms persist.
Comedogenic Rating
Rating: 1 out of 5. Cetyl Hexacosyl Dimethicone/Bis-Vinyldimethicone Crosspolymer is a large crosslinked silicone that sits mainly on the surface rather than seeping into pores, so it rarely blocks them. While any film-forming ingredient can theoretically trap oil and debris, the airy powder texture and low usage levels in formulas keep that risk minimal. Overall it is usually suitable for people prone to acne or breakouts, though individual experiences can differ. Be aware that very heavy layering of multiple silicone products may increase the chance of congestion simply because more residue builds up on the skin.
Summary
Cetyl Hexacosyl Dimethicone/Bis-Vinyldimethicone Crosspolymer conditions skin and works as an emollient. Its crosslinked silicone network creates a silky breathable film that smooths texture, locks in moisture and helps products glide evenly. Because it blurs fine lines without feeling greasy it has become a quiet staple in primers, moisturizers, sunscreens and lightweight foundations, even if you do not hear its name often on marketing materials.
Current research shows it is safe for regular topical use with very low irritation or allergy rates. Still, everyone’s skin is unique so it is smart to patch test any new product containing this ingredient before applying it all over your face.