The story
From the resemblance of the dry powder form to table sugar.
Etymology from Wiktionary, CC BY-SA 4.0.
sugar soap
Today it means: An extremely powerful detergent used for washing surfaces prior to painting. Full definition →
Today it means: An extremely powerful detergent used for washing surfaces prior to painting. Full definition →
From the resemblance of the dry powder form to table sugar.
Etymology from Wiktionary, CC BY-SA 4.0.