The most common and most likely answer to this crossword clue is the 7 letter word CHIGNON
I've seen this crossword clue in The Times
C
H
I
G
N
O
N
More clues leading to the result CHIGNON
- Hit on including good hairstyle
- Hair feature well away from Essex town — not in Paris
- Check privy to put outside good arrangement of locks
- Nice mushroom a representative has left for bun
- A politician avoids mushroom in Paris bun
- Hair that could be inch long with initial cut
- Travel around Norway wearing feature hairstyle
- Pig-tail included in feature on coiffure
- Hair to go round front of nose into area even further down
- Grown initially in beard’s place, showing coil of hair
Buddy explains!

The straight part
We know that "hairstyle" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hairstyle = chignon.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 CHIGNON mean?
CHIGNON noun- A roll or twist of hair worn at the nape of the neck; a bun.
- A temporary swelling on a neonate's head after a ventouse-assisted delivery.