Mouthwash, lotion, body wash,
SHAMPOO and conditioner...
The Big Bang Theory Season 2, Episode 21
Dandruff SHAMPOO.
The Big Bang Theory Season 4, Episode 1
for peeing
in his SHAMPOO bottle...
The Big Bang Theory Season 12, Episode 4
...and my new dandruff SHAMPOO
doesn't smell like tar.
The Big Bang Theory Season 6, Episode 6
It's Darth Vader SHAMPOO.
The Big Bang Theory Season 1, Episode 1