Wella Color Touch Demi-Permanent Hair Colour without ammonia - low commitment, multi-dimensional hair colour for clients who like to change their tone more regularly. It uses a gentle formula that offers colour correction and natural colour enhancement to provide excellent coverage, even on those tricky grey hairs (up to 50% grey/white hair coverage). Benefits:- Ammonia free and infused with Keratin;- High shine for stunning high fashion results;- Low-maintenance & quick changes: it only takes from 5- 20 min to get the look;- Up to 50% grey/ white hair coverage;- Simple mixing 1:2 ratio.