I'm so excited to announce that the brilliant Beauty Editor of Women's Health and self- confessed skincare nerd Perdita Nouril will be a regular Friday co-host.

Each week we'll be getting under the skin of the biggest beauty trends and products and discussing the science, research and whether they're worth the hype.

This week Perdie explains why the iconic Biologique Recherche Lotion P50 may not be as readily available as it once was and how this superstar skincare product is to thank for the brilliant PHA products that are now so readily available.

We'll also hear about all the unexpected ways that PHAs can benefit us (I knew they were good but never knew quite HOW good) and Perdita will share some of her top PHA products.

Enjoy this fellow skincare enthusiasts and thanks to Perdita for her amazing knowledge.