RPR Colour U 6.66 100ml is a professional permanent hair colour designed to deliver intense red dark blonde tones with maximum vibrancy, depth, and shine. This double red (.66) formulation provides powerful colour intensity, creating a bold, luminous finish with rich, high-impact red reflects.

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 delivers consistent, fade-resistant colour with excellent grey coverage and professional salon-quality performance. The hybrid system allows for both permanent and demi-like results depending on application, giving flexibility in salon services. 

Key Benefits:
• Double red tone for intense, vibrant results
• High-impact colour with strong shine and reflect
• 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 dark blonde tones