Nails. I've talked about them several times here and here and needless to say, I like my nails to be in order. Chipped manicures give me a twitch, and I suffered for a while from peeling nails. As a teen, I used to have the habit of taking off my polish in the shower...by scraping it off...I probably don't need to tell you just how bad that is for your nails, since you end up scraping off the top layer of your nail as well. Then, the debacle with the no-chip manicure caused my nails to become brittle, peeling, and essentially awful. Aside from incorporating a healthier diet into my regime (I say this while I eat a coconut macaroon, but we're allowed cheat days, right? Right?!), I also incorporated the products above.