Sun Damage and Photoaging in Men

What Photoaging Is

Photoaging is the portion of skin aging caused by ultraviolet light rather than time alone. A review of natural and sun-induced aging describes how UV exposure fragments the dermal collagen network and affects nearly every aspect of skin biology, including repair and pigmentation (Rittie and Fisher, 2015). The visible result is a distinct look: leathery texture, coarse wrinkles, and blotchy pigment.

The process does not require sunburn. Research on human skin found that UV doses too small to cause redness still activated collagen-degrading enzymes (Fisher et al., 1996). Everyday exposure while driving, walking, or working outside adds up over decades.

The American Academy of Dermatology puts it simply: the sun plays a major role in premature skin aging, and every tan, from the sun or a tanning bed, prematurely ages skin.

Signs Men Notice

• Coarse wrinkles and deep forehead lines, especially in men who squint outdoors.
• Rough, uneven texture that looks weathered rather than simply dry.
• Sun spots (also called age spots, liver spots, or solar lentigines) on the face, scalp, and backs of the hands. See dark spots and hyperpigmentation.
• Uneven, blotchy tone and broken small blood vessels around the nose and cheeks.
• A noticeable difference between the face and normally covered skin, such as the inner arm.

Men with thinning hair often see damage on the scalp and tops of the ears, two areas that are easy to miss with sunscreen.

What the Sunscreen Trials Found

The strongest evidence comes from a randomized controlled trial in Nambour, Australia. Researchers assigned 903 adults under 55 either to daily broad-spectrum sunscreen or to use sunscreen at their own discretion. After 4.5 years, the daily sunscreen group showed no detectable increase in skin aging, and aging was 24% less than in the discretionary group (Hughes et al., 2013). The authors concluded that regular sunscreen use slows skin aging in healthy, middle-aged men and women.

There is also some evidence for improvement, not just prevention. In a one-year study of 32 people using a broad-spectrum SPF 30 sunscreen daily, dermatologist assessments showed improvement in texture, clarity, and pigmentation (Randhawa et al., 2016). That study was small, had no control group, and was sponsored by a sunscreen manufacturer, so it should be read with caution. One plausible explanation is that removing daily UV stress lets skin repair itself.

Choosing and Using Sunscreen

The American Academy of Dermatology recommends sunscreen that is broad-spectrum (protects against UVA and UVB), SPF 30 or higher, and water-resistant. Beyond that, the best sunscreen is one you will wear every day. Some practical notes for men:

• Use enough. The AAD suggests at least one teaspoon for the face. Cover the ears, the back of the neck, and the scalp if hair is thin.
• Apply every day. The AAD notes that up to 80% of the sun's UV rays can pass through clouds.
• Reapply about every two hours outdoors, and after swimming or sweating.
• Around shaving. Apply sunscreen after shaving and after any moisturizer. If your skin stings, a mineral (zinc oxide or titanium dioxide) formula is often gentler.
• Oily or acne-prone skin. Look for "non-comedogenic" or "won't clog pores," as the AAD suggests.
• Beards block some UV but not all. Cheeks above the beard line and the neck still need coverage.

Sunscreen is one layer. The AAD also recommends seeking shade, especially between 10 a.m. and 2 p.m., and wearing a wide-brimmed hat and UV-protective sunglasses. Sunglasses also reduce squinting, which the AAD notes contributes to lines over time.

Repairing Existing Damage

Topical tretinoin has the most evidence. A double-blind trial found that 14 of 15 patients applying tretinoin to the face improved, compared with none on an inactive cream (Weiss et al., 1988). Longer treatment partly restored collagen formation in sun-damaged skin (Griffiths et al., 1993) and lightened sun spots (Rafal et al., 1992). Tretinoin increases sun sensitivity, so sunscreen becomes even more important while using it. It is a prescription medicine, and a licensed clinician decides whether it is appropriate.

Retinol is a milder, over-the-counter option with smaller studies (Kafi et al., 2007).

Procedures such as chemical peels and lasers are used for more significant damage. They are outside the scope of this guide and require an in-person evaluation.

For more on how UV affects skin structure, read collagen loss and facial aging.

Spots Worth Checking

Sun exposure is also the main preventable cause of skin cancer. The AAD estimates that one in five Americans will develop skin cancer in their lifetime. Not every spot is cosmetic. Use the AAD's ABCDE guide (asymmetry, border, color, diameter, evolving) and see a clinician in person for any spot that is new, changing, itching, bleeding, or looks different from your others. A rough, scaly patch that does not heal also deserves an in-person exam.

Frequently Asked Questions

Can sun damage on the face be reversed?

Partly. Daily sunscreen prevents further damage and may allow some improvement over time. Topical tretinoin has controlled-trial evidence for improving photoaged skin (Weiss et al., 1988). Deeper damage may need in-person procedures.

What SPF should men use every day?

The American Academy of Dermatology recommends broad-spectrum, water-resistant SPF 30 or higher, applied daily to skin not covered by clothing.

Do I need sunscreen if I work indoors?

Daily sunscreen is still recommended. Commutes, errands, and time near windows add up, and the AAD notes that up to 80% of the sun's UV rays can pass through clouds.

Is a tan a sign of healthy skin?

No. The AAD states that every tan, from the sun or a tanning bed, prematurely ages skin.