[Emulsion paint](https://www.homebase.co.uk/paint\\-decorating/paint/wall\\-ceiling\\-paint.list) is usually used on walls and ceilings, it's a water\\-based paint which usually has vinyl or acrylic added to it to make it easier to apply. It's ideal for living rooms, hallways, studies, and bedrooms (it's best to specially formulated paints in kitchens and bathrooms).