Los Angelenos love their beauty treatments.
But from Brazil to Beijing, one of the fastest growing markets in the world is the one for clinical cosmetics.
And you know we're not just talking about make-up here, but all sorts of other "interventions" from facial peels to botox treatments to full cosmetic surgery.
At the moment this market is estimated to be worth $10 billion a year worldwide and it's getting bigger.
But, a surprising number of these treatments are barely regulated at all.
The BBC's Justin Rowlatt found out a bit more as he strolled around a cosmetic surgery trade fair in London.