What Is Dimethicone/Divinyldimethicone/Silsesquioxane Crosspolymer?
Dimethicone/Divinyldimethicone/Silsesquioxane Crosspolymer is a silicone-based network created by chemically linking three different silicone building blocks: dimethicone for softness and slip, divinyldimethicone for flexibility and film-forming ability, and silsesquioxane monomers that add a cage-like structure for strength and stability. The result is a lightweight porous powder that behaves like a sponge, able to trap and slowly release oils or water while feeling silky on the skin.
Silicones first entered cosmetics in the 1950s for their smooth, non-greasy feel. As formulators looked for more sophisticated textures, chemists began crosslinking silicones in the late 1990s to create elastomer gels that blur, mattify and extend wear time. Dimethicone/Divinyldimethicone/Silsesquioxane Crosspolymer emerged from this research, pairing the bounce of elastomers with the oil-control properties of silsesquioxanes. Today it is produced by mixing the three monomers, adding a platinum catalyst then curing the blend at controlled temperatures until a three-dimensional lattice forms. The solid is milled into an ultrafine powder or dispersed into a gel that is easy to incorporate into formulas.
You will find this ingredient in primers, oil-free moisturizers, matte or long-wear foundations, color-correcting creams, finishing powders, sunscreens, hair styling products and even sheet mask essences where it helps deliver a soft-focus finish.
Dimethicone/Divinyldimethicone/Silsesquioxane Crosspolymer’s Cosmetic Benefits/Uses
This multitasking silicone brings several performance boosts to personal care formulas:
- Anticaking: Its porous particles coat pigments and absorb excess moisture so pressed powders remain free-flowing and do not form hard clumps over time
- Humectant: By holding small amounts of water within its lattice it helps keep skin feeling hydrated without adding heaviness or shine
- Skin Protecting: The flexible film it forms sits on the surface acting as a breathable barrier that shields against environmental irritants and reduces transepidermal water loss
- Viscosity Controlling: It thickens oil or water phases into a cushiony gel giving creams and serums a luxuriously smooth application and improving product stability
Who Can Use Dimethicone/Divinyldimethicone/Silsesquioxane Crosspolymer
This ingredient is generally well tolerated by all skin types including oily, combination, normal, dry and sensitive since it is non reactive and breathable. Those with very oily or acne prone skin usually appreciate its mattifying and blurring effect while dry or mature skin benefits from the light moisture retention it provides. It is not considered unsuitable for any particular skin type although anyone who knows they react poorly to silicones in general should proceed with caution.
The material is synthetic, produced without animal derivatives or animal testing requirements, so it is typically viewed as vegan and vegetarian friendly provided the finished product and brand policies align with cruelty free standards.
Current safety data shows no reproductive or developmental toxicity associated with topical use. Pregnant or breastfeeding women can use products that contain Dimethicone/Divinyldimethicone/Silsesquioxane Crosspolymer, yet this is not medical advice and it is always best for expectant or nursing mothers to review any skincare routine with their physician.
The polymer does not absorb UV light or make skin more sensitive to sunlight so it does not cause photosensitivity. It is also fragrance free and non volatile which minimizes inhalation concerns in powder formats.
Potential Side Effects/Adverse Reactions
Reactions to Dimethicone/Divinyldimethicone/Silsesquioxane Crosspolymer vary from person to person. The points below outline potential effects that are unlikely for the average user when the ingredient is formulated correctly in a cosmetic product.
- Mild skin irritation or redness in individuals who are sensitive to silicones
- Occasional clogged pores or millia in skin that is extremely prone to congestion
- Product pilling or flaking when layered with incompatible formulas rich in high molecular weight polymers or high levels of alcohol
- Temporary feeling of dryness if used in very high concentration without supplemental emollients
If any unwanted reaction occurs stop using the product and consult a qualified healthcare professional.
Comedogenic Rating
Rating: 1/5
Dimethicone/Divinyldimethicone/Silsesquioxane Crosspolymer consists of large, crosslinked silicone molecules that sit on top of the skin instead of seeping into pores. Its porous, sponge-like structure even helps soak up excess sebum, which lowers the chance of pore blockage. A tiny minority of users who are extremely congestion-prone may still notice build-up if the product formula contains heavy oils along with the polymer, which is why the score is not a perfect zero.
Suitable for acne-prone or breakout-prone skin in most cases.
Because it forms a breathable film and does not harden inside pores, any congestion it might cause is usually easy to clear with regular cleansing.
Summary
Dimethicone/Divinyldimethicone/Silsesquioxane Crosspolymer is a multitasking silicone that works as an anticaking agent, light humectant, skin protectant and viscosity controller. Its three-dimensional lattice absorbs and slowly releases oil or water, giving products a silky feel, soft-focus finish and longer wear time. The polymer thickens formulas into cushiony gels while creating a flexible barrier that reduces moisture loss.
Although not as famous as plain dimethicone, this crosspolymer has become a staple in primers, long-wear foundations and matte skincare because consumers enjoy its blurring, non-greasy texture.
Current safety data shows it to be low risk with very limited irritation potential. As with any new cosmetic ingredient, doing a small patch test when trying a fresh product is a smart precaution.