And easily adaptable to individual differences in skin environment, fewer adverse effects such as side effects, which can improve the health of the skin flora By selectively growing the useful bacteria, new and safe cosmetic method , it provides a dry cell suitably used in the skin care composition and its manufacturing. A step of collecting the bacteria that inhabit the skin surface of a person, out of the bacteria collected, a step of growing on the skin surface of a person, to selectively grow the beneficial bacteria in one or more improving the health of the skin , cosmetic method comprising the step of administering cells of useful bacteria were grown, the bacterial component and the composition comprising one or more selected from the group consisting of useful production material of bacteria to human skin, of the Skin care compositions containing beneficial bacteria and / or produced substance was selectively grown in the manner.皮膚環境の個人差に容易に対応可能で、副作用等の悪影響が少なく、有用菌を選択的に増殖させることにより皮膚常在菌叢の健全化を図ることが可能な、新規かつ安全な美容方法、スキンケア用組成物およびその製造に好適に用いられる乾燥菌体を提供する。ヒトの皮膚表面に生息する細菌を採取する工程と、採取した細菌のうち、ヒトの皮膚表面で増殖し、皮膚の健康状態を改善させる1または複数種の有用菌を選択的に増殖させる工程と、増殖させた有用菌の菌体、菌体成分および前記有用菌の産生物質からなる群より選択される1または複数を含む組成物をヒトの皮膚に投与する工程とを有する美容方法、上記のようにして選択的に増殖させた有用菌および/またはその産生物質を含むスキンケア組成物。