L’Oréal Professionnel Dia Hair Colour in shade 01 Black is a professional demi‑permanent gloss colour designed to enhance natural dark hair or refresh existing colour with deep, reflective black tone. The gentle, ammonia‑free formula offers a more subtle alternative to permanent colour, ideal for first‑time colour clients or those who want low‑commitment results.
This creamy gel‑cream texture deposits pigment evenly while respecting the hair fibre, leaving strands looking smoother and more luminous. Dia colour is developed to provide up to 6 weeks of visible gloss and natural‑looking depth, with up to approximately 70% grey coverage or blending (depending on hair type and technique). The result is shiny, multidimensional black hair with a soft, seamless fade and minimal regrowth line.
Exclusively for professional use in salon, it is suitable for men and women and can be used alone for tone‑on‑tone darkening, to refresh lengths and ends, or to add depth and shine after lightening services when used with the recommended Dia developer.
Key Features (optional bullets)
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Demi‑permanent, ammonia‑free black hair colour
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Shade 01 Black – deep, natural‑looking black tone
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Designed to deliver up to 6 weeks of glossy colour
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Helps blend and soften the appearance of greys (up to around 70% depending on usage)
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Leaves hair looking shinier and smoother with a reflective finish
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Creamy gel‑cream texture for easy mixing and application
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Ideal for first‑time colour users, glossing, and refreshing mid‑lengths & ends
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For professional in‑salon use only (to be mixed with Dia developer as directed by hairdresser)
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