PROBLEM TO BE SOLVED: To provide a biofilm remover composition for a human body that achieves both high biofilm removal effect and low horny layer swelling properties.SOLUTION: A biofilm remover composition for a human body comprises one or more internal olefin sulfonic acid salt (component A) having carbon atoms of 16 or more and 22 or less with a sulfonic acid group present at a position other than the 1-position of the carbon chain, where the content of an olefin sulfonic acid salt (component B) with a sulfonic acid group present at the 1-position of the carbon chain is 20 mass% or less relative to the total of the component A and component B.