FINNLEY'S SPEED BLEACH is a non-rinse liquid decolourant to lighten hair by up to 3 shades simply using hot straightening irons. In just 2 minutes, the hair is bleached ready for dyeing or for the creation of light effects. Directions for use: apply to clean and dry hair after styling. Apply Speed Bleach to hair with a brush, massage and evenly distribute the product; comb and straighten as required to achieve the desired degree of lightening. The temperature of the straighteners varies, from 140-180 degrees, depending on ther hair's structure. DO NOT RINSE. Do not use on bleached hair. Contains substances to protect the hair and increase shine.