Dia Light is the new acid gel-cream tone on tone colour / Tint from Loreal. It is ideal for coloured or sensitised hair and it offers zero lightening and ultimate shine and condition. DIALIGHT is specifically designed for coloured hair, so its shades are perfect for refreshing an existing colour between two permanent hair colour applications or for a colour matching service. DIALIGHT's innovative acid-gel formulation is free from ammonia and won't lighten or sensitise hair. Instead, it adds intense shine and condition to coloured hair for beautiful, luminous reflects. To get the best results from DIALIGHT, you need to mix it with its specially created developer DIACTIVATEUR. Mixing ratio is 1 part colour to 1.5 parts developer and development time is just 20 minutes. Each shade comes in a 50-ml tube.