Sideburns styled with gel? Bet this hair looks cool! (8,7)

I believe the answer is:

designer stubble

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'hair looks cool' is the definition.
I know nothing about this answer so I can't tell whether this works.

'sideburns styled with gel? bet' is the wordplay.
'styled with' indicates anagramming the letters.
'gel'+'bet'='gelbet'
'sideburns' anagrammed with 'gelbet' makes 'DESIGNER STUBBLE'.

'this' is the link.

Can you help me to learn more?

(Other definitions for designer stubble that I've seen before include "Fashionable unshaven look" , "kind of personal appearance" , "shave this?" .)

I've seen this clue in The Telegraph.

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