Yon-Ka Paris Dermol 3 Hydrating Concentrate Overview Using a serum to boost the efficacy of your daily moisturizer has become a popular way to keep aging skin smooth, hydrated, and as line-free as possible. Finding the right one, of course, is the never-ending quest. Today, I’m taking a look at Yon-Ka Paris Dermol 3 Hydrating Concentrate. There are 3 similar…