Although 
zinc pyrithione is known as an excellent antidandruff component, there is a demand for an effort to reduce the blending amount without lowering the effects from the viewpoint of environmental 
pollution. Also, there is a demand for developing a technique that enables combining 
zinc pyrithione with cuprous 
oxide to be used as an antifouling component for a ship-bottom paint. Moreover, also as an 
antiseptic and anti-mold component for 
polymer materials, further enhancement of the 
antimicrobial activity of 
zinc pyrithione has been demanded.It has been elucidated that a new composite of the present invention obtained by treating an 
aqueous suspension or an aqueous paste containing zinc pyrithione or a zinc pyrithione / zinc 
oxide complex compound and ultrafine zinc 
oxide having an average particle 
diameter of 0.01 to 0.15 μM at pH 8 to 12 exerts an excellent physiologic / antibiotic activity such as an anti-
dandruff and hair restoration effect and an 
underwater antifouling, 
antiseptic and anti-mold effect. Thus, the above-described problems have been solved.