RPR Colour U 5.1 100ml is a professional permanent hair colour designed to deliver cool ash light brown tones with clean, controlled results. This shade features an ash reflect that helps neutralise unwanted warmth and red undertones, creating a natural, matte finish.

The Colour U system is a superior hair colour cream enriched with Cashmere Keratin and Black Pearl Minerals, helping to condition, smooth, and enhance shine during the colouring process. It also includes UV reflectors to help protect the hair and maintain long-lasting colour vibrancy.

This advanced formula provides consistent, fade-resistant colour with excellent grey coverage and professional salon-quality performance. It is part of a low-ammonia system with over 100 intermixable shades, allowing full creative control.

Key Benefits:
• Cool ash tone to neutralise unwanted warmth
• Natural, matte light brown finish
• Long-lasting, fade-resistant performance
• Excellent grey coverage
• Enriched with keratin for smoother, conditioned hair
• UV protection to help maintain colour longevity
• Professional salon-quality results

How to Use:
Mix with developer in a 1:1.5 ratio (e.g. 50g colour + 75g developer). Apply evenly to dry hair, process as required, then rinse thoroughly and follow with conditioner.

Ideal For:
Permanent hair colouring, grey coverage, and achieving cool ash brown tones