Directions Semi Permanent Conditioning Hair Stormy Grey, is is directions semi-permanent Stormy grey hair color can be mixed with each other for the most beautiful colors. It is best applied to chemically treated hair. Long-lasting hair color. 100% free from ammonia, peroxide and PPD. It has a great conditioning effect. Direction: Apply direction evenly with the aid of a tint brush. Leave for around 15 minutes, rinse thoroughly and dry. Direction will take faster and last longer on chemically treated hair.