A few weeks ago my daughter-in-law set me a challenge to write a column explaining how to tell a friend that the Justin Bieber hairdo was, um, A MISTAKE. It was obviously topical for her, and given that parents have started rows over their teenage children's appearance since time immemorial, the art of criticising a young person's appearance in a constructive way could probably bear a little attention.
My answer to her would be leave him alone; he'll work it out when he discovers that he has a swarm of 10-year-old girls around him while the ladies of his own generation giggle in the background. It's a good strategy for parents, too, if it's really not a life-threatening or career-killing problem. But there are some things you can do to help prevent your kids making bad appearance choices in the first place.