The purpose of the present invention is to provide a cosmetic base having an unprecedented appearance and feeling on use, in particular a cosmetic base with a novel feeling on use that gives a fresh feeling of a sherbet-like appearance and a unique feel as if the cosmetic softly bursts and collapses, allowing water to flow out, when applied to the skin, and a skin cosmetic using the same. The present invention relates to a cosmetic base including (A) 0.15-0.6 mass% of sodium acrylate-grafted starch and (B) 0.25-1.35 mass% of an associative thickener having a polyoxyalkylene chain wherein the total amount of the (A) sodium acrylate-grafted starch and (B) associative thickener having a polyoxyalkylene chain compounded is 0.5-1.5 mass% and to a skin cosmetic that uses the cosmetic base.本發明之目的在於提供一種具有前所未有之外觀與使用感之化妝料基劑，尤其是提供一種外觀為雪霜狀而賦予視覺上之清涼感，且於塗抹於肌膚時化妝料溫和地化開而崩解並且賦予如水溢出般之獨特之觸感的新穎之使用感之化妝料基劑及使用其之皮膚化妝料。本發明係關於一種化妝料基劑以及使用該化妝料基劑之皮膚化妝料，該化妝料基劑係含有(A) 0.15～0.6質量%之丙烯酸鈉接枝澱粉、及(B) 0.25～1.35質量%之具有聚氧伸烷基鏈之締合性增黏劑者，且上述(A)丙烯酸鈉接枝澱粉與(B)具有聚氧伸烷基鏈之締合性增黏劑之合計調配量為0.5～1.5質量%。
