Crazy Colour Violette 100mlPATCH TEST Before you reach for your bottle of Crazy Color, you should carry out a patch test this is to test your skin's sensitivity and ensure you will not have any irritation using our products. STRAND TEST A strand test will give you a true indication of how the colour will take to your hair. The condition of your hair and other factors can affect this so you might get different results each time, even if using the same Crazy Color shade. A strand