The Rene of Paris Prepare Shampoo is a gently scented shampoo that helps maintain the smoothness, strength, and shine of your wig or hairpiece. How do I use it? Pour a small amount (approx 1 capful) into a bowl, or sink filled with 1litre of cool water. Gently shake the wig, or hairpiece and leave in the solution for approximately 10 minutes. After 10 minutes, remove and rinse thoroughly in lukewarm water. Do not wring or twist your wig/hairpiece. Remember also not to comb or brush your piece when it is wet. Allow it to dry naturally on a towel or wig stand. Bottle size: 236.56ml / 8 fl. oz.