Patch testing is a legal requirement, it is for your safety. Please see the guidelines set out below, paying particular attention to the new guidelines regarding Covid Vaccination. This may mean you have to be tested again following both parts of the vaccine. The reason for this is because the strong immune response triggered when receiving a new vaccine can make some people temporarily more likely to react to other allergens. Please do not postpone a vaccination for your brows! We are happy to reschedule you as soon as possible!