HOME›LAB INSIGHTS›THE DEFINITIVE GUIDE TO PATCH TESTING FOR LASH AND BROW TECHSGUIDEThe Definitive Guide to Patch Testing for Lash and Brow Techs7 MAY 2026GuideFunWhat if my client refuses a patch test?What would happen if a client took legal action over a reaction?If I’m patch testing correctly, do I still need insurance? I see my clients more frequently than the patch testing guidelines state. Do I still need to test every 6/12 months?Are henna brow products in the shade black the same as black henna tattoos?How do I patch test if I’m unsure of the exact tint ratios/shades I will use during the treatment? Can I use the darkest shade?Can I get my client to sign a patch test waiver?Why does my client need a patch test with me if they’ve recently had the same treatment elsewhere?Can I use a postal patch test?SHARECOPY LINKEMAILWHATSAPPFACEBOOK←BACK TO ALL INSIGHTS