Sunscreen's ability to block sunburns and prevent skin cancer is well known, but many dermatologists say it's also the best skin care product for slowing signs of aging. Here's what to know about how UV rays cause the skin to age and how sunscreen helps to minimize those effects.

A new study from the Journal of Dermatologic Surgery shows that sunscreen not only protects your skin but can also reverse common signs of photo-aging, such as wrinkles and dark spots.

Broad spectrum sunscreens protect the skin from aging as well as harmful UV rays. Some products also claim protection against free radicals.

• Olay Day Cream Regenerist Microsculpting Moisturiser.
• Neutrogena Rapid Wrinkle Repair Moisturizer.
• Wow Skin Science Anti Aging Night Cream.
• Lakme Youth Infinity Skin firming Day Cream.
• Garnier Wrinkle Lift Anti Aging Cream.
• StBotanica Pure Radiance Anti Aging & Face Brightening Cream.

• Olay Day Cream Regenerist Microsculpting Moisturiser.
• Neutrogena Rapid Wrinkle Repair Moisturizer.
• Wow Skin Science Anti Aging Night Cream.
• Lakme Youth Infinity Skin firming Day Cream.
• Garnier Wrinkle Lift Anti Aging Cream.
• StBotanica Pure Radiance Anti Aging & Face Brightening Cream.

We can write a manifesto on why UV protection with a broad-spectrum SPF rating of at least 30 is non-negotiable for everyone's skin-care routines, but it's especially important for those with maturing skin to prevent increased signs of aging.

How to Minimize Wrinkles with Sunscreen

1. You should reapply sunscreen every two hours or every 40 to 80 minutes you come into contact with water or sweat.
2. If using a chemical sunscreen, wait 30 minutes or more before going outside.
3. Use enough sunscreen to cover the exposed parts of your body.

Used regularly, sunscreen helps prevent sunburn, skin cancer and premature aging. To help make sunscreen a part of your daily routine, dermatologist Anna Chien addresses common concerns.

Our Top Picks

• L'Oréal Paris revitalift laser renew advanced anti-ageing care SPF20.
• Olay Regenerist collagen peptide 24.
• Balance Me intensive wrinkle repair cream.
• Drunk Elephant lala retro whipped cream.
• Ameliorate replenishing facial cream.
• Espa tri-active lift and firm moisturiser.
• Monat be gentle nourishing moisturiser.

If you're looking for a formula that can reduce dark spots while also supporting anti-aging efforts, the Neutrogena Rapid Tone Repair Retinol + Vitamin C Dark Spot Corrector is our top pick.

EltaMD UV Clear Broad-Spectrum SPF 46 is a go-to recommendation from Tiffany J. Libby, M.D., a board-certified dermatologist and the director of Mohs micrographic and dermatologic surgery at Brown Dermatology in East Providence, R.I. “I truly love it for all and not just acne-prone patients,” says Dr. Libby.

25 Best Sunscreens For Face And Body For Adults Over 40

• COOLA Organic Classic Sunscreen Body Spray.
• Supergoop! PLAY SPF 50 Antioxidant Spray.
• Neutrogena Beach Defense Spray Sunscreen.
• Sun Bum Mineral SPF 30 Sunscreen Spray.
• Alba Botanica Cool Sport Refreshing Clear Spray SPF 50.
• SolRX SPF 50 Sport Sunscreen Dry Spray.

It takes approximately 15 minutes for the chemical sunscreen to be absorbed into your skin and become activated to provide full protection. So if you wait until you are in the sun to apply it, that leaves you about 15 minutes where you are under-protected.