The present invention relates to a composition for removing keratinous skin material, the composition comprising a Lactobacillus strain or a culture thereof. Also, the present invention relates to a composition for removing keratinous skin material, the composition comprising green tea Lactobacillus as Lactobacillus. In contrast to when skin is improved through the supply of a moisture fraction by a commonly used skin-moisturizing component, the Lactobacillus according to the present invention removes keratinous skin material, thereby producing the advantageous effect that skin can be cared for and improved as the waste materials which accumulates on the skin is fundamentally removed. Therefore, the composition according to the present invention can effectively prevent or alleviate skin problems such as spots. Also, the invention regulates the skin and so improves skin tone by removing surplus keratinous material which is not needed by the skin.