Nerdette Grainne talks to Jen about the importance of skin philosophy and the all essential Core 4. Get all of Jennifer Rock's top skincare tips and watch her exclusive RTÉ Lifestyle series at RTÉ.ie/lifestyle/the-skin-nerd

A new podcast series from RTÉ as Jennifer Rock aka The Skin Nerd, discusses all things skin. Along the way she's joined by her nerds and nerdettes to share some tips. Listen to all five episodes now and see more from The Skin Nerd at RTÉ.ie/Lifestyle..