What Number should I use?
"What Number should I use?" is one of the most frequently asked questions I get. Here's a quick primer to help determine which products are right for you. Apologies in advance for the lack of clever witty writing - I've always been more of a math/science girl than an English/grammar chick - hence the nurse practitioner/Numbers gig. So let's get down to it! Teenage boy or girl with acne or "problem skin" - Use No. 1 Glycolic facial cleanser once or twice daily and follow with moisturizer such as No. 17 collagen moisturizer. Numbers for men - Keep No. 1 glycolic facial wash in the shower. Use it once or twice daily and follow with No. 17 collagen moisturizer or No. 18...