<;P>;PROBLEM TO BE SOLVED: To provide a composition and a fermented milk containing lactobacillus, originating from natural material, and having high safety, high skin amelioration and/or treatment effect and good production properties. <;P>;SOLUTION: The invention provides the use of Streptococcus thermophilus OLS3059 for the amelioration and/or treatment of skin, a composition for the amelioration and/or treatment of skin containing Streptococcus thermophilus OLS3059 and/or its cultured material, a food or drink containing the composition, a fermented milk for the amelioration and/or treatment of skin produced by using Lactobacillus delbrueckii subsp. bulgaricus and Streptococcus thermophilus OLS3059, and a fermented milk for the amelioration and/or treatment of skin, prepared by the above method and containing a collagen peptide and/or ceramide. <;P>;COPYRIGHT: (C)2007,JPO&INPIT