Pronunciation

change

Singular
shampoo

Plural
shampoos

 
Shampoo.
  1. Shampoo is liquid soap used for washing hair.
    My favorite shampoo was on sale for half price at the store, so I bought a few bottles.

Plain form
shampoo

Third-person singular
shampoos

Past tense
shampooed

Past participle
shampooed

Present participle
shampooing

  1. If you shampoo your hair, you wash it with soap.
    In the shower, I shampoo my hair before washing my body.