Biolage ColorLast Coloured Hair Mask Deep Treatment Pack Colour Protect for Coloured Hair. ColorLast Deep Treatment Pack is for those who are looking to maintain or restore colour-treated hair for shiny, vibrant results. Experience instant gratification and a deep hair transformation. Light, easy to squeeze packaging filled with indulgent and sensorial textures. 100% vegan formulas made concentrated with plant-based emollients including orchid, known for its restorative and protective properties and apricot seed, rich in protein and antioxidants.