1. (noun) cleansing agent consisting of soaps or detergents used for washing the hair

• cleaner
• cleanser
• cleansing agent

2. (noun) the act of washing your hair with shampoo

• hair care
• haircare
• hairdressing

3. (verb) use shampoo on (hair)

• lave
• wash

1. (verb) use shampoo on (hair)

• condition