Whilst this is a fun read, it didn't capture my children's imagination in a big way. This may be because they have no experience of male pattern baldness, or have yet to attain that age where they become overly self aware.
There is a lovely message behind the story, just be happy being yourself, and don't assume others will judge you as harshly as you do yourself. However in the real world there are a lot of people who will do just that, and kids need to realise that too....