“Sephora kids”: these very young girls obsessed with “skincare”, a trend that worries dermatologists. Behind their pop packaging, certain cosmetic brands, popular with teenagers, offer anti-aging creams and serums with a unique composition.

“I wash my face and apply a hydrating serum every night before bed. Now, I need an extra cream, even if my parents think it’s stupid,” says 12-year-old Flora.