Tresemme Colour Revitalising Shampoo 500ml Advanced colour lock technology protects your gorgeous colour for up to 40 washes. Colour stays gorgeous longer & hair is softer & more manageable Ultra gentle formula is ideal for colour-treated hair Features Advanced Colour Lock Technology to protect colour for 40 washes. Enriched with green tea, rosemary, & sunflower, it replenishes vital moisture.