%I IOP Publishing Ltd %J IOP Conference Series: Earth and Environmental Science %T Preface, peer review declare, article: Effect of Glycerin as Plasticizer in Formulation of Grape Seed Oil (Vitis vinifera L.) Emulgel Peel-Off Mask %L repository9213 %A Fith Fith Khaira Nursal %A Nining Nining %A Aisyah Rahmani