What Is Dimethicone/Polyglycerin-3 Crosspolymer?
Dimethicone/Polyglycerin-3 Crosspolymer is a silicone-based polymer formed by linking dimethicone, a smooth fluid silicone, with polyglycerin-3, a plant-derived glycerin chain. The result is a three-dimensional network that combines the silky feel of silicone with the water-loving nature of glycerin. Chemists developed this hybrid in the early 2000s when formulators began looking for silicones that could offer both slip and a touch of hydration in one ingredient.
The manufacturing process starts with food-grade glycerin, which is heated and condensed to create polyglycerin-3. This backbone is then reacted with vinyl-terminated dimethicone in the presence of a catalyst, forming a cross-linked gel. After neutralization and filtration the ingredient is ready for cosmetic use.
Because it improves texture and mildness the polymer can be found in a wide range of products. These include daily facial cleansers, hydrating and anti-aging moisturizers, wash-off masks, lightweight lotions, make-up primers and leave-on serums. Brands favor it when they want a silky finish without an oily feel.
Dimethicone/Polyglycerin-3 Crosspolymer’s Cosmetic Benefits/Uses
This multi-tasking polymer supports both the feel and performance of skin care and cleansing formulas.
- Cleansing: Helps lift dirt and makeup while cushioning surfactants so the skin feels less stripped
- Skin conditioning: Leaves a soft non-greasy film that reduces moisture loss and boosts smoothness
- Emulsifying: Stabilizes oil-in-water mixtures, keeping creams and lotions from separating over time
- Viscosity controlling: Thickens water-based systems giving products a pleasant gel or cream texture that stays consistent in the jar or tube
Who Can Use Dimethicone/Polyglycerin-3 Crosspolymer
This silicone-glycerin hybrid works for most skin types including normal, dry, combination and sensitive skin thanks to its gentle profile and lightweight feel. Oily or acne-prone users usually tolerate it as well because it forms a breathable non-occlusive film instead of a heavy coat.
The ingredient is considered vegan and vegetarian friendly since both dimethicone and polyglycerin-3 are synthesized from mineral or plant sources rather than animal derivatives.
Current safety data show no known reproductive risks, so products containing Dimethicone/Polyglycerin-3 Crosspolymer are generally viewed as safe for people who are pregnant or breastfeeding. This is not medical advice and anyone who is expecting or nursing should run any skincare routine past a qualified healthcare professional to be sure.
It does not increase photosensitivity, so there is no special need for extra sun precautions beyond daily SPF use.
Potential Side Effects/Adverse Reactions
Side effects from topical use of Dimethicone/Polyglycerin-3 Crosspolymer vary from person to person. The reactions listed below are possible but unlikely for most people when the ingredient is used correctly in a finished cosmetic formula.
- Localized redness or irritation
- Mild itching or stinging on very sensitive skin
- Temporary clogged pores if layered with heavy occlusives
- Allergic contact dermatitis in rare cases of silicone sensitivity
If any of these issues occur discontinue use and consult a healthcare professional
Comedogenic Rating
Rating: 1 / 5
Dimethicone/Polyglycerin-3 Crosspolymer forms a lightweight breathable film that lets water vapor pass through and does not trap sebum in the way heavy oils can. Its large cross-linked structure sits on top of the skin then rinses or wears away without sinking into pores, so the risk of clogging is very low. For most people prone to acne or breakouts this ingredient is considered safe to use. If blemishes do appear they are usually the result of other richer components in the same formula, not the polymer itself.
One point is given instead of zero because any film-forming agent can, in rare cases, contribute to congestion when combined with thick occlusives or if used on skin that is not cleansed regularly.
Summary
Dimethicone/Polyglycerin-3 Crosspolymer cleanses, conditions skin, stabilizes emulsions and fine-tunes viscosity. The silicone half provides slip and silky afterfeel while the polyglycerin side attracts a bit of water giving a soft touch of hydration. The three-dimensional network also thickens formulas so gels stay gel-like and creams stay creamy, and it helps oil and water stay blended which means a longer shelf life and a smoother application.
Although not as famous as plain dimethicone or glycerin the hybrid is gaining traction in modern cleansers primers and lightweight moisturizers where brands want the best of both worlds slip plus a whisper of moisture without heaviness.
Current safety data show it is non-sensitizing non-irritating and non-phototoxic when used as intended. Still every complexion is unique so do a quick patch test when trying any new product that contains this polymer just to be on the safe side.