#1. Control sun exposure.
The single biggest factor you can control in your skin's appearance is sun exposure.
Wear sunscreen year-round.
Look for sunscreen labeled as broad spectrum to ensure that it blocks both types of UV rays.
Limit midday sun.
Limit time spent outdoors when the sun is at its peak, usually between 10 a.m. and 4 p.m.
Wear protective clothing.
A wet T-shirt at the beach offers practically no UV protection.
Don't tan on purpose.
There's no such thing as a healthy "base" tan.
Kick the habit.
keeping your skin healthy and young looking is not smoking
Keep your skin moist to diminish fine wrinkles and prevent skin from cracking or flaking
Seal in moisture.
Choose a mild, fragrance-free soap that moisturizes
Eat a healthy diet and drink water.
Eat healthy and stay hydrated. Drinking adequate amounts of fluids and getting proper nutrition (rich in antioxidants) also help keep skin hydrated and healthy.