The science of coloured hair Repeated washing, sun exposure, pollution and external aggressions can make coloured hair more sensitive. With time colour fades, losing its shine and intensity. The secret to colour protection The L'Oréal laboratories have created a formula which acts on 3 Dimensions of colour - Intensity, Luminosity, Reflection: 1 Maintains Colour Intensity: The new Colour-Seal Elixir has been developed to intensively condition, to help protect colour from fading and preserve its intensity. 2 Protects Hair: The formula enriched with UVA/UVB Filters protects coloured hair from external aggressions. Hair looks full of life. 3 Prolongs Radiance: The formula with Concentrated Nourishment intensely nourishes the hair and smoothens its surface. Shine is revived and radiance is prolonged. Proven results Intense, radiant colour: 80% of colour radiance maintained after 28 washes.