PROBLEM TO BE SOLVED: To provide an agent for living tissue capable of protecting living tissues such as dermal tissue and subcutaneous tissue from external stimulation on the living tissue with radiation, especially near-infrared rays, electromagnetic rays and radioactive rays and mechanical stimulation and internal stimulation with active oxygen and inflammation causative substances produced in the living tissue and repairing the damaged tissue, usable for preventing aging of the living tissue, rejuvenation and cosmetic treatment, promoting wound healing, having little side effect to enable safe use for a long time, and having excellent stability and permeability.SOLUTION: The living tissue agent includes a micelle 1 including keratin 2 and vitamin Cs as active components to protect the living tissue from external stimulation and/or internal stimulation and/or repair the damaged tissue, wherein the inclusion of the active components is carried out while purging ambient atmosphere with an inert gas.
