On this week's episode Niamh Maher is heading off on a holiday and Her.ie's Beauty Editor Rebecca O'Keeffe is sitting down with guru of all things skincare Caroline Hirons. Ever wondered what retinol ACTUALLY does? Do you know how much water you should ACTUALLY be drinking and did you know that having a blog will ACTUALLY help your children hook up (that one might be isolated to Caroline's case), click play for all this and more!