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Are more expensive face creams worth it?

I'm back with a new series of Sliced Bread to investigate more of your suggested wonder products and I'm starting with one of the most-requested so far. Do more expensive moisturisers, serums and oils live up to the hype? Can they result in smoother, brighter, firmer, healthier skin or is it all just marketing BS?

Listener Aristide wants to know whether one of the most expensive products on the market - 'Creme de la Mer' (拢80 for 15ml) - has any more evidence to back it up than the cheap moisturiser he uses from the High Street. And listener Fiona is keen to hear about the effectiveness of retinol, one of the most popular ingredients used in creams and serums today.

In this episode I'll get the answers with the help of our expert, consultant dermatologist Dr Emma Wedgeworth.

Once again this series I'm looking for more of your suggestions for wonder products to investigate. If you鈥檝e seen an ad, trend or fad rproduct promsing to make you happier, healthier or greener and want to know if there鈥檚 any evidence behind it, then email us: sliced.bread@bbc.co.uk or you can send a voice note to our WhatsApp number: 07543 306807

Presenter: Greg Foot
Producer: Simon Hoban