In the No. 1 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."

That’s 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."

Starting at age 30, your skin thins at a rate of 1% a year, and it needs all the help it can get to stay youthful looking.

My upcoming book "The Great Age Reboot" explores how to protect your skin so you look as young as you feel. Here are some tips to get you started:

• Younger-looking skin starts with not smoking and limiting unprotected sun exposure. Micronized zinc oxide is my go-to, although titanium works too. Non-zinc (and non-titanium) sunscreens may be hormone disruptors — and toxic, according to the FDA.

• Topical application of vitamins C and A, and fruit acids such as glycolic, lactic, malic, and citric acid, along with niacinamide (a form of vitamin B3), help improve skin tone and texture. You can also get them through a plant-based diet of red and orange veggies, citrus, avocados, mushrooms, legumes, ginger, and sweet peppers.

• Antiaging products that temporarily smooth wrinkles by causing inflammation and swelling speed skin aging in the long run. Save them for a once-a-year photo shoot.