Autoglym Surface Detailing Clay Bar， removes all surface contaminants prior to polishing and waxing. Product size: 100g premium grade clay bar in a moisture sealed case. Product Features: Quickly and safely removes contaminants Leaves an ultra-smooth finish in preparation for polishing or waxing Long lasting and reusable Usage instructions: 1. Wash vehicle with Autoglym Car Shampoo or Bodywork Shampoo Conditioner. Thoroughly knead the clay so it is warm and supple. Pull off a piece and form into a pad the size of a large coin. 2. Gently move the clay over the surface in a backward and forward motion using light finger pressure. Frequently lubricate the area being treated with Autoglym Rapid Detailer or Fast Shine and Lube. 3. Repeat the process across the whole vehicle， remembering to knead the clay regularly to keep it supple. Keep folding the clay so a fresh surface is in contact with the paintwork. Once all surfaces of the clay are contaminated， start again with a fresh piece. 4. Once the vehicle is contaminant free， polish with Autoglym Super Resin Polish or proceed with High Definition Wax or Autoglym Intensive Tar Remover to remove any existing polishes/waxes/sealants. Expert tips:   Use to remove brake dust that has become embedded in alloy wheels. Video tutorial: