Silicone-based make-up uses a silicone — or a blend of water and silicone — as the main ingredient. The most typical silicones used are dimethicone, polysiloxane and volatile silicones such as cyclomethicone and phenyl trimethicone. The silicone provides lubrication and viscosity (what some artists refer to as "slip") at a level equal to, or often, even better than oil allowing a product to apply and blend over the skin smoothly and evenly. Silicones have a lighter weight and are thus more comfortable on the skin, as well as resisting filling in lines or large pores on the face. Conventional silicones stay supple and smooth, even in dry climates, whereas volatile silicones last long enough to blend over the face, then evaporate (like alcohol), leaving little to no feel behind. Silicone-based makeups are less likely to oxidise or change colour during wear. One of the biggest challenges facing silicone bases is the tendency for the product to break and/or ball up on the skin, something unique to silicones and out of control of the user. Ionizing the silicones (electrically charging the silicone positive) helps it adhere to (negatively charged) skin,^[14] although this technology is in its infancy and thus rather expensive. Examples: Maybelline Dream Matte Mousse