Why do I need to carry out a skin allergy test 48 hours BEFORE every colour application?
The skin allergy test is the most reliable way of predicting a possible allergic reaction. If you experience itching, reddening or any reaction as a result of the skin allergy test. DO NOT use the product. Please Contact the Experts retaining the packaging for reference and before colouring your hair again, consult a doctor. Please select the video page in order to see how to complete a skin allergy test.