PROBLEM TO BE SOLVED: To provide effervescent external preparations for skin that quickly form a moderately viscous gel, have a high visual effect due to a quick generation of carbonic acid gas, and have a good feeling of use due to the cracking feeling of carbonic acid gas even when applying to the skin, in effervescent external preparation for skin which is mixed at the time of use to generate carbonic acid gas.SOLUTION: An effervescent external preparation for skin which is mixed at the time of use and generates carbonic acid gas comprises absorptive resin particles, is separated into a first agent containing at least basic carbonate and a second agent containing an acidic substance, and is mixed at the time of use to be prepared.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】使用時に混合して炭酸ガスを発生する発泡性皮膚外用剤において、素早く適度な粘性ゲルを形成し、炭酸ガスが速やかに発生するため視覚的効果が高く、肌に塗布した際も、炭酸ガスのクラッキング感により、使用感が良好な発泡性皮膚外用剤を提供すること。【解決手段】使用時に混合して炭酸ガスを発生させる皮膚外用剤であって、吸水性樹脂粒子を含有し、少なくとも塩基性炭酸塩を含有する第1剤と、酸性物質を含有する第2剤とに分離されており、使用時に混合して調製されるものである発泡性皮膚外用剤。【選択図】なし
