The invention provides a cosmetic material with an unprecedented and innovative characteristic that the ultraviolet protection effect is not reduced by heat, but the effect is improved, and a manufacturing method thereof.The present invention relates to a method for manufacturing cosmetics whose ultraviolet protection effect is enhanced by heat, which includes the following steps: (1) preparing epoxy resins containing (A) ultraviolet protection agents, and (B) selected from IOB of 5.0 or less Sample composition of one or more humectants in alkane derivatives and polyhydric alcohols； and (2) According to the evaluation method including the following steps (i) to (iv), the phases before screening and heat treatment Sample composition with enhanced UV protection effect after heat treatment: (i) forming a coating film of the sample composition on the substrate； (ii) heating the coating film of the sample composition； (iii) measuring The ultraviolet protection effect of the coating film of the heat-treated sample composition and the heat treatment sample composition； and (iv) comparing the measured ultraviolet protection effect.本發明提供一種具有紫外線防禦效果不因熱而降低，反而效果提昇之前所未有之革新特性的化妝料及其製造方法。本發明係關於一種紫外線防禦效果藉由熱而提昇之化妝料之製造方法，其包括如下步驟：(1)準備含有(A)紫外線防禦劑、及(B)選自IOB為5.0以下之環氧烷衍生物及多元醇中之1種或2種以上之保濕劑的試樣組合物；以及(2)按照包括下述(i)～(iv)之步驟之評價方法，篩選與加熱處理前相比加熱處理後之紫外線防禦效果提昇之試樣組合物：(i)於基體上形成試樣組合物之塗膜；(ii)對試樣組合物之塗膜進行加熱處理；(iii)測定未進行加熱處理之試樣組合物之塗膜及進行過加熱處理之試樣組合物之塗膜的紫外線防禦效果；及(iv)將測得之紫外線防禦效果進行比較。
