You have may have seen stories in the media in the last week about David Beckham's hair.
Beckham, 43, was pictured two weeks ago in Miami with what Dr Shahmalak said was reasonably advanced male pattern baldness.
He was thinning noticeably right across his scalp except for a noticeable patch at the front where there appeared to be greater follicle density.
Dr Shahmalak said he could not be certain because it could be a trick of the light but this greater density pointed to the fact that Beckham may have had a FUE (follicular unit transplantation) hair transplant.
The possible inspiration for this was Beckham's close friend, chef Gordon Ramsay, who has had at least two FUE hair transplants.
Flash forward to this week and Beckham was pictured again in Hong Kong.
This time, the hair right across his scalp was appreciably thicker and the star had dyed his hair a darker shade of brown.
The hair dye made his hair look thicker and it appeared that Beckham was using a hair thickening product to cover up the male pattern baldness that was so evident in Miami.
Lots of male stars use thickener to disguise their baldness.
A good example of this trend is another former England captain, Wayne Rooney, who has often used thickening products before big football matches so that his hair looks better.
These products only provide a temporary solution to the problem of baldness. Once the thickener is washed out, your hair goes back to look just as it did before.
The only long-term solution to male pattern baldness is a hair transplant - the most popular method being FUE, the procedure chosen by Rooney and Crown Clinic clients Calum Best, Homes Under The Hammer star Martin Roberts, Gogglebox star Chris Butland-Steed and the former international footballer Didi Hamann.
Around 80% of the clients at Crown Clinic opt for FUE because the scarring is minimal. Most patients are left with a few red pin pricks where the follicles are removed and replanted but these tend to go away after a few weeks.
It is particularly suitable for men who like to wear their hair shaved or short because of the minimal impact of the scarring.
There is every chance that Beckham may have chosen FUE for this reason. He changes his hair all the time but often wears it short.
The other method of hair transplantation used at Crown Clinic is the traditional method, FUT (follicular unit transplantation), where a strip of skin is taken from the back or side of the scalp to obtain the donor hair.
Whatever has been going on with David Beckham's hair, it will be very good news if he has had a hair transplant.
He is a global fashion icon and he knows that Brand Beckham will be far more valuable if he keeps a full head of hair.
He will also be aware that his dad Ted is almost completely bald, and that 80% of hair loss is down to family genes.
See below, this week's Daily Mail newspaper quoting Dr Shahmalak about Beckham's hair.