The invention provides a composite particle, a process for producing the same, and cosmetics containing the same The invention relates to composite particles containing a polyolefin-based resin having a crystallization degree of 80% or less and zinc oxide and obtained by hot melt microencapsulation or spray cooling, or composite particles containing a polyolefin-based resin having a crystallization degree of 80% or less and zinc oxide, wherein the degree of remaining zinc oxide in the particles is 50 wt % or more after being dipped for 1 hour in 0.5 mol/L hydrochloric acid solution at 25.degree. C. (solution composition: water and ethanol in equal volumes), a process for producing the composite particles, and cosmetics containing the composite particles.