| abstract |
(57) [Problem] To provide a method for effectively preventing or improving discoloration caused by pyrithione, and to provide a composition in which discoloration caused by pyrithione is prevented. SOLUTION: A method for preventing or improving discoloration caused by pyrithione, which comprises contacting pyrithione with at least one boric acid compound selected from ammonium salts and metal salts (excluding zinc salts) of boric acid, And a composition obtained by adding at least one boric acid compound selected from ammonium salts and metal salts of boric acid (excluding zinc salts) to pyrithione. |