The most common and most likely answer to this crossword clue is the 7 letter word POMADES
P
O
M
A
D
E
S
Buddy explains!
The straight part
We know that "Hair treatments" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hair treatments = pomades.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does POMADES mean?
POMADES noun- A greasy or waxy substance that is used to style hair, making it look slick and shiny.
- Any medicinal ointment.
- To anoint with pomade; to use pomade to style (hair).