noun
spot removal (from skin)
Refers to cosmetic treatments or products for removing dark spots, freckles, or age spots from the skin. Usually written as シミ取り.
このクリームはシミ取りに効果的です。
This cream is effective for spot removal.
noun
stain remover
Refers to products or methods for removing stains from fabric or other materials. Usually written as 染み取り.
染み取りを使ってワイシャツの汚れを落とした。
I used a stain remover to get the dirt out of my dress shirt.
Compound of しみ (stain/spot) + 取り (removal), from 取る (to remove).