Eyebrow tint add definition to your eyebrows by dying them darker eyelash tint accentuate your natural eyelashes by dying them darker an eyelash tint is recommended before eyelash extensions for those who have fair lashes new clients patch test required tinting requires a free patch test at least 24 hours before the treatment please book a patch test on our online booking system wwwlondonlashstudiocouk under 39new client consultationpatch test or email londonlashstudiogma