This soap is primarily composed of stearic acid.

In organic chemistry, stearin is a type of solid fatty acid.

I wash my hands with soap every day.

The sourness of this lemon is very strong.

Stearic acid is often used in the manufacture of cosmetics and soap.

This lemon is sour.

Please add a little vinegar to this salad.

I bought a new soap dish.

I wash my hands using bar soap.

I wash my hands with liquid soap every day.