+22 Olia Hair Color Dark Blonde Ideas. Web olia's 7.0 dark blonde hair dye formula has been improved for even healthier hair providing you with garnier's dark blonde hair dye with no ammonia, no silicone and created with a vegan formula*. Exceptional colour with no fear for your hair.

Is this shade right for me? The 1st permanent home hair colour is powered by oil, not ammonia, to reduce damage. Is this shade right for me?