Bigen Speedy is excellent for darkening grey hair to meet your needs:

1. Moderate Darkening
Grey hair can be significately darkened in just 5minutes

2. Gradual Darkening
Grey hair can be gradually darkened via repeated application with shortened color developing time.

3. Perfect darkening
Grey hair can be perfectly darkened by extending color developing time to 10-15minutes.

Usage
- Open Seal
- Squeeze Cream
- Comb through
- Shampoo