RPR Colour U 4 100ml is a professional permanent hair colour designed to deliver natural medium brown tones with rich depth and long-lasting results. This shade provides even, consistent coverage, creating a balanced and natural-looking finish from roots to ends.

The advanced colour system is formulated to enhance shine, condition the hair, and maintain softness throughout the colouring process. It delivers vibrant, fade-resistant colour with reliable performance, making it ideal for achieving professional salon-quality results.

Key Benefits:
• Natural medium brown tone for balanced results
• Long-lasting, fade-resistant colour
• Smooth and even coverage
• Helps maintain hair softness and shine
• Professional salon-quality performance

How to Use:
Mix with the appropriate developer as directed. Apply evenly to dry hair, process according to instructions, then rinse thoroughly and follow with conditioner.

Ideal For:
Permanent hair colouring, grey coverage, and achieving natural medium brown results