L'Oréal Professionnel Dia Light is an ammonia-free, semi-permanent, tone-on-tone hair colour designed for maximum shine and conditioning. It is ideal for hair that has been previously coloured, weakened, or sensitized, making it perfect for color refreshes and toning lengths and ends between regular color services. The advanced acid-gel cream technology ensures a seamless color blend, sealing the cuticle for a vinyl-like finish, resulting in enhanced shine and over 30% more conditioned hair*. The Dia Light range offers a diverse palette of shades, from warm beige to cool ash tones for both brunettes and blondes, enabling the creation of customized, personalized color results. This formula softens the hair fiber and adds tone without any lifting.