BIOTULIN

COSMOPOLITAN

Stars swear by this cosmetic active ingredient, which is more effective than retinol for a botox effect.

MADAME FIGARO

Natural Botox: the beauty secret of Sophie Marceau, Kate Middleton and Meghan Markle.

GRAZIA

The anti-aging secret of Sophie Marceau, 57, to erase wrinkles... and it's not botox!