The key split is end use: products formulated and presented for personal hygiene (toilet use) fall under 340111 regardless of whether they contain synthetic surfactants, while bars or cakes intended for laundry, industrial cleaning, or other non-toilet purposes fall under 340119. Labeling, marketing, and formulation evidence all factor into the determination.

A liquid or cream product whose primary function is skin washing and that is put up for retail sale falls under 340130 within heading 3401. If the product is primarily a surface-active or cleaning preparation not specifically for skin washing, it is more likely to classify under heading 3402. The distinction rests on the product's principal function and how it is presented to the end consumer.