Always do a patch test 48 hours in advance of using any colourants products

After 48 hours, please check for any reaction or irritation. If you notice anything, please discontinue use of the product. If you're allergic to PPD, your scalp and face may feel itchy and start to swell. PPD may also trigger symptoms throughout your body, such as itching, a nettle rash and generally feeling ill. These symptoms may not develop until hours, or even days, later. A severe allergic reaction that develops within minutes is called anaphylaxis, or "anaphylactic shock". Signs of anaphylaxis include: itchy skin or a raised, red skin rash swollen eyes, lips, hands and feet – the eyelids can swell so much that the eyes close feeling lightheaded or faint swelling of the mouth, throat or tongue, which can cause breathing and swallowing difficulties wheezing tummy pain, nausea and vomiting collapsing and becoming unconscious Always carry out a patch test before using a permanent or semi-permanent hair dye, even if you are using your regular brand. This usually involves dabbing a small amount of the dye solution behind your ear or on your inner elbow and leaving it to dry. Follow the instructions that come with the dye. If you develop any irritation or feel unwell after the patch test, do not use the product. Allergy clinic You could also have a patch test done at an allergy clinic, to see which chemicals you're sensitive to, if any. You can then check product labels and avoid products containing these chemicals. However, the clinic may not test all hair dye chemicals. If you do not develop any reaction from the patch test, you can continue to use the dye, but make sure you: do not leave it on for longer than the recommended time wear gloves when applying the dye rinse your hair thoroughly afterwards carefully follow the instructions included. For more information Click here test