Biolage Color Last Shampoo - 1000ml. Keep your strands true to tone with Color Last Shampoo. Ideal for color-treated hair, this low-pH formula gently cleanses while helping to maintain colour depth and tone, as well as shine. Infused and micro-dosed with a carefully calibrated colour care concentrate of soybean oil, it delivers the ideal level of protection, nourishment and preservation for lasting colour, high shine and supreme smoothness.