I have used hair colour for years without any problems. Why do I need to carry out a sensitivity test before using Tints of Nature?
It is possible to become sensitive to ingredients used in hair colour over time. Also some medication may have an affect, as well as permanent make-up or tattoos. If your scalp is irritated or damaged, this might also cause a potential reaction. We always recommend that a sensitivity test is carried out at least 48 hours before use, every time you use Tints of Nature. Full details are included in the instruction leaflet in each box.