Stains are divided up into four main categories: greasy stains (e.g. from cooking oil and cream) protein-based stains (e.g. from blood and milk) bleachable stains (e.g. fruit juice, coffee, red wine, tea, mildew, mould etc.) pigment stains (e.g. ink, felt-tip pens, watercolour, lipstick, grease, soil, makeup etc.) In addition to these, there are also more complex stains, such as rust and so-called mixed stains, which are a combination of different stain types.