You can use a Spray on your a recently purchased or recently cleaned suede bag with one of the many products that protect against water damage and other stains. As with any fabric, test a small, unseen patch first. Store your bag so that it can breathe. Please use the cotton bag provided instead to protect your bag from dust Avoid plastic bags, which prevent air circulation. Keep suede away from light, which will fade the colour, and damp conditions, which can encourage growth of damaging mould and mildew. If your suede bag gets wet, soak up excess moisture with a clean towel. Then allow the suede to dry naturally; do not use a heat source to speed up the process or rub the bag. After the item dries, restore the nap (the raised fibres typical of suede) with a suede brush. Stains will probably require professional care. Take your suede item to someone who specializes in leather and suede.