You should always patch test at least 48 hours prior to using Oiamiga hair dye - even if it is a brand you have used before. To patch test with Oiamiga:
If you experience any irritation, redness, swelling or burning, it is likely you are allergic to an ingredient in Oiamiga permanent hair dye and should not use it. If this happens, please contact us and we will help you to find a more suitable product.
Our friendly support team are here to help, so please do contact us.