REF Hair Colouring System currently consits of 65 different nuances, dust free blue pigmented Bleach Powder and 4 different developpers.

The colours are divided into 14 different groups:

Naturals

Intense Naturals

Ashes

Woods

coffees

Saharas

Goldens

Bahias

Coppers

Reds

Mahoganys

Pearls

High Lifts

Correctors.