Guest Post: This week I have a guest blogger on Sweet Inspovation: Frannie is a biochemistry professor and Rodan+Fields consultant. She’s highlighting Rodan + Fields products while she talks about the science of skin hydration. She’s also giving away one Rodan + Fields Active Hydration Serum ($108 value) to a lucky reader! One way to gain an entry is to post a comment on which regimen addresses your primary skincare concerns. She’ll also randomly pick five comments to get a free minifacial in the mail. Good luck! Giveaway closes December 10th at 6pm CST. Read on for all the Sweet Deets!