Terms and conditions: Available with selected stylists only. Subject to Stylist availability. Available on Saturday Only. Valid from 01/08/18 until 31/09/18. GET 40% OFF any Colour Technical Service. Valid on Colour, Highlights, Semipermanent Colour, Toner and Gloss colour. This promotion can not be in conjunction with any other Offers.''40% OFF Saturday Colour Offer'' must be quoted when calling to book your appointment to receive the discount. The One reserves the right to withdraw this offer at any time.