The most common and most likely answer to this crossword clue is the 9 letter word TONSORIAL
I've seen this crossword clue in The Guardian
T
O
N
S
O
R
I
A
L
More clues leading to the result TONSORIAL
- Remarkably, no tailors using scissors for work?
- Barber’s getting lots, with old competitor losing heart
- Performing well in audition of barbers
- Soon going into test barber's work
- Relating to barbers? No. Tailors, perhaps
- Sailor not trained for hairdressing
- Trio with salon possibly thus described?
- Switched on tailors for barbers
Buddy explains!

The straight part
We know that "for barbers" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case for barbers = tonsorial.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 TONSORIAL mean?
TONSORIAL adjective- Relating to barbers or to shaving.