SHAMPOO is a playable word

shampoo Scrabble® Dictionary

verb
shampooed, shampooing, shampoos
to cleanse with a special preparation
112 Playable Words can be made from "SHAMPOO"
   2-Letter Words (16 found)
   5-Letter Words (9 found)
   6-Letter Words (2 found)
   7-Letter Words (2 found)