cleansing powder; washing powder
Dated term for a powdered cleanser used for washing hair, skin, or tableware. Modern equivalents are often liquid or cream cleansers.
My grandmother used to wash her hair with cleansing powder.
hair-washing powder; powder shampoo
Standard kanji spelling.
Variant spelling without okurigana; less common but still seen.
Compound of 洗い (arai, 'washing', the continuative form of 洗う) and 粉 (ko, 'powder').