US Patent 11883680 Method and apparatus for tightening skin and other tissues

A system and method for treating a tissue is provided. The treatment causes a tightening or lifting of tissue. The method includes delivering a photochemical agent through a depth of the tissue to distribute the photochemical agent adjacent proteins within the tissue and irradiating the tissue with an electromagnetic irradiation at a wavelength that activates the photochemical agent, causing a protein response that brings fibers of the tissue closer together in order to one of reduce tissue laxity and tighten the tissue. A kit is provided to facilitate the method.