I agree with Wobbletastic but also the target audience for this show must be women (aged 30-50?) and I bet they prefer to watch make over programmes about other women, rather than men.
I think more men should go for it, I mean, for the dental care alone it's worth it! As for the target audience being women, while that may be true, I'm sure a significant number of men do watch the show and while looking at women being transformed may be more fun, it would be nice to get a few tips we could use as well!