What Is Bis-Vinyldimethicone/Bis-Isobutyl Ppg-20 Crosspolymer?
Bis-Vinyldimethicone/Bis-Isobutyl Ppg-20 Crosspolymer is a man-made silicone ingredient created for modern skin and hair care. Chemically, it is a three-dimensional network formed when Bis-Vinyldimethicone is first linked with small rings of methylhydrogen siloxane then tied together again with Bis-Methallyl Ppg-20. The result is a soft powder or gel-like material that swells in oils, giving products a smooth cushiony feel.
Silicone elastomers like this started appearing in the late 1990s as brands looked for new ways to give formulas a silky touch without heavy oils. Today the material is produced in specialized reactors where the silicone chains are mixed, crosslinked and then milled into a fine powder or dispersed in a carrier fluid ready for blending into finished cosmetics.
You will most often spot Bis-Vinyldimethicone/Bis-Isobutyl Ppg-20 Crosspolymer in face primers, liquid and powder foundations, tinted moisturizers, sunscreens, anti-aging serums, sheet masks, leave-on hair creams and styling pastes. Its ability to improve texture and slip makes it a go-to choice whenever a product needs to feel velvety yet light.
Bis-Vinyldimethicone/Bis-Isobutyl Ppg-20 Crosspolymer’s Cosmetic Benefits/Uses
This ingredient earns its place on an ingredient list by improving both the feel and performance of a formula.
- Emollient – Wraps the skin or hair in a thin flexible film that feels silky keeps moisture from escaping and helps rough spots feel softer right away
- Viscosity controlling – Thickens oil phases suspends pigments and gives creams gels and lotions a smooth spreadability lightweight feel and a soft focus finish
Who Can Use Bis-Vinyldimethicone/Bis-Isobutyl Ppg-20 Crosspolymer
This silicone powder is lightweight and non greasy so it tends to agree with most skin types including oily, combination and sensitive skin as well as dry or mature complexions that like a silky finish. Because it forms a breathable film rather than a heavy seal it is usually comfortable even for acne prone users, though anyone who finds silicones trigger breakouts may prefer to limit use.
The ingredient is fully synthetic and does not rely on any animal derived raw materials which makes it suitable for both vegans and vegetarians.
Current cosmetic safety data show no specific reproductive or developmental concerns for topical use, so products containing Bis-Vinyldimethicone/Bis-Isobutyl Ppg-20 Crosspolymer are generally considered safe for women who are pregnant or breastfeeding. This is not medical advice and expecting or nursing mothers should always review products with their physician to be sure they fit individual needs.
Unlike certain retinoids or exfoliating acids this polymer does not increase photosensitivity. Standard daytime sun protection is still recommended but there is no added risk of heightened sun reaction from this ingredient itself.
It is odorless, colorless and has no known interactions with common actives such as vitamin C, niacinamide or benzoyl peroxide, making it easy to slot into most routines.
Potential Side Effects/Adverse Reactions
Responses to topical Bis-Vinyldimethicone/Bis-Isobutyl Ppg-20 Crosspolymer can differ from one person to the next. The points below outline possible but uncommon reactions. When the ingredient is used at typical levels in well formulated products most people will not notice any negative effects.
- Mild skin irritation
- Stinging or redness on very sensitive or compromised skin
- Temporary pore congestion or acne flare if an individual is silicone sensitive
- Allergic contact dermatitis in rare cases where a person develops a specific sensitivity
- Build up on hair shafts causing dullness or limp texture if not cleansed properly in hair care products
If any discomfort, rash or persistent breakouts appear discontinue use and seek advice from a healthcare professional or dermatologist.
Comedogenic Rating
Rating: 1 out of 5
Bis-Vinyldimethicone/Bis-Isobutyl Ppg-20 Crosspolymer earns a very low score because its particles are large and sit on top of the skin rather than sinking into pores. It forms a breathable flexible film that allows water vapor to pass while keeping friction low, so it is unlikely to clog follicles. Most people prone to acne or blackheads can use it without extra concern.
One thing to keep in mind is that the ingredient often appears alongside heavier oils or waxes that may raise a formula’s overall comedogenic potential. Always look at the full ingredient list if clogging is a worry.
Summary
Bis-Vinyldimethicone/Bis-Isobutyl Ppg-20 Crosspolymer works as both an emollient and a viscosity controller. In simple terms it smooths the surface of skin or hair, locks in a bit of moisture and thickens products so they spread in a silky even layer. The crosslinked silicone network swells in oils to give creams and serums a plush cushioned glide while helping pigments stay evenly suspended for a soft focus finish.
The ingredient is popular in primers foundations sunscreens and lightweight styling creams but it is not as widely used as everyday dimethicone, mainly because it costs more and needs specific processing. Brands looking for a premium feel still reach for it often.
Current safety reviews show it is non irritating non sensitizing and stable. Topical use is considered low risk for all skin types and life stages. As with any new product a quick patch test behind the ear or on the inner forearm is a smart step just to be sure your skin agrees.