If you’re getting accustomed to the sounds of angsty sighs and whinges from behind the bathroom door, the chances are you have a teenager tackling their changing skin.

Getting to know the inside of mum’s beauty cabinet (without permission, naturally) and taking on board conflicting advice from friends and magazines can make for a wobbly initiation into the world of skincare.

Beauty journalist Alice Hart-Davis became aware of the minefield facing teens when her daughter suddenly started asking questions about her looks and routines.

As a beauty beginner, Molly had so many questions she became the ideal co-author alongside her mother to write Be Beautiful – a book offering practical advice for inquisitive teens. Many of the tips are handy for debunking beauty myths for big kids too.

So sit back and swot up on your daughter’s skincare. You may not be able to work out that maths equation or ease boyfriend woes, but you can boost her confidence in beauty.