All our adhesives are low in fumes which is better for the clients and yourself. You must do a patch test on every new client or if you change adhesive. Please remember that patch test doesn’t guarantee 100% that the client won’t react on the day. If your client had sensitivity, allergy to lash adhesive in the past, most likely she / he will react to our adhesive. As all adhesives contains cyanoacrylates, which is the main allergen. But there could be a possibility that the client is allergic to pigment, then best to choose clear glue. We have a very good blog about allergies, you can find it here