The ingredients found most likely to cause sensitivities from a lash or brow tint are not the same ingredients as found in a lamination product so performing a brow lamination is safe as long as it is not followed with a brow tint. For all clients that express sensitivities in previous services it is best to review if they have had an ingredient allergy test performed by a dermatologist or allergist. There maybe more than one ingredient that they are sensitive to and of course performing a patch test is mandatory.