Abstract: An ink composition including at least one photochromic pigment or dye, at least one film-forming resin, and at least one solvent in which the at least one photochromic pigment or dye and the at least one film-forming resin are dispersible or dissolvable, wherein the components of the ink composition are present in respective amounts such that the ink composition is in the form of a liquid or gel until evaporation of the at least one solvent, and wherein, upon evaporation of the at least one solvent, the at least one film-forming resin forms a film that (a) inhibits the ink composition from degrading when covered with the sunscreen product or (b) inhibits the ink composition from washing off when the sunscreen is washed off or both, the film-forming resin including shellac, polyurethane, acrylic polymer, silicone polymer or a mixture thereof.

Abstract: A temporary tattoo decal including: (a) a porous paper base; (b) a water soluble slip layer or a release coating on at least a first surface of the paper base; (c) a photochromic ink layer atop the slip layer or the release coating; and (d) a pressure-sensitive adhesive layer atop the photochromic ink layer, wherein the photochromic ink layer includes at least one photochromic material that is capable of changing its color when exposed to UV radiation and a polymer matrix in which the at least one photochromic material is distributed; and wherein the polymer matrix substantially prevents the ink material from degrading when covered with a sunscreen product and inhibits the photochromic ink from washing off when the sunscreen product covering the photochromic ink layer is washed off.

Abstract: An ink composition including at least one photochromic pigment or dye, at least one film-forming resin, and at least one solvent in which the at least one photochromic pigment or dye and the at least one film-forming resin are dispersible or dissolvable, wherein the components of the ink composition are present in respective amounts such that the ink composition is in the form of a liquid or gel until evaporation of the at least one solvent, and wherein, upon evaporation of the at least one solvent, the at least one film-forming resin forms a film that (a) inhibits the ink composition from degrading when covered with the sunscreen product or (b) inhibits the ink composition from washing off when the sunscreen is washed off or both, the film-forming resin including shellac, polyurethane, acrylic polymer, silicone polymer or a mixture thereof.