Hi, I am looking to add lash and brow tinting to my services, however when I have searched for brands, the ones I have found recommend doing a patch test before every single service. My insurance has a minimum requirement (before initial the initial service, after any changes in medical history, every 12 months and if I change brands etc) but also says that if stricter measures are recommended by the brand I am using, then I have to follow those. Some of my clients come from quite far away so won't want to make the same trip within a few days for every lash tint. Can anyone recommend a brand I could use or is this the case with all of them? If so, I would still appreciate any recommendations. Thank you.