In the No. one country-pop single “A Country Song,” Kelsea Ballerini croons, “When I need to feel good in my skin, I drop everything and run to him.” A sweet sentiment, but she knows it takes more than that to have good skin. In fact, she’s declared, “I used to really not care about my skincare routine, and then I turned 25 and realized I should probably start wearing sunscreen.”
Yup. After all, st…