RPR Colour U 5.66 100ml is a professional permanent hair colour designed to deliver intense red light brown tones with rich vibrancy, depth, and long-lasting results. This double red (.66) formulation enhances colour intensity, creating a bold, luminous finish with strong reflect and shine.

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

This advanced formula provides consistent, fade-resistant colour with excellent grey coverage and reliable salon-quality performance, making it ideal for vibrant, high-impact red tones.

Key Benefits:
• Double red tone for intense, vibrant results
• Enhances colour richness and shine
• Long-lasting, fade-resistant performance
• Excellent grey coverage
• Enriched with keratin for smoother, conditioned hair
• UV protection to 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 bold intense red light brown tones