June 28, 2025
Exposure to sunlight is essential for our wellbeing—it helps the body produce vitamin D and lifts our mood. However, prolonged and unprotected sun exposure can damage the skin in multiple ways. From premature aging to increasing the risk of skin cancer, sun damage is a serious concern. According to Dr Shaun Segal, a renowned skin specialist and dermatologist, understanding how the sun affects your skin and taking consistent preventive steps can dramatically improve skin health and longevity.
In this detailed guide, Dr Shaun Segal explains the causes of sun damage, its signs, and the best methods of prevention to keep your skin protected all year round.
Sun damage is primarily caused by ultraviolet (UV) radiation. There are two types of harmful UV rays:
Both UVA and UVB rays can damage skin cells and DNA, accelerating the aging process and increasing the risk of skin cancer. The long-term effects of sun damage can manifest even if you don’t experience visible sunburn.
Sun damage can show up in various forms:
According to Dr Shaun Segal, many people don’t realize the extent of their sun damage until much later in life. Preventive care is essential from an early age to avoid irreversible effects.
Once skin damage occurs, it can be difficult to reverse. While there are treatments available, such as laser therapy, chemical peels, and topical antioxidants, the best defense is a good offense. Preventing sun damage not only preserves the youthfulness of your skin but also protects you against life-threatening conditions like melanoma.
Dr Shaun Segal stresses that everyone, regardless of age or skin tone, needs to take sun protection seriously.
Always choose a sunscreen labeled “broad-spectrum,” which protects against both UVA and UVB rays. A minimum SPF of 30 is recommended for daily use. Reapply every two hours, especially after swimming or sweating. Don’t forget areas like your ears, neck, hands, and feet.
Long sleeves, wide-brimmed hats, and UV-blocking sunglasses provide additional barriers. Special UPF-rated clothing is available that blocks UV rays more effectively than standard fabrics.
Try to stay indoors or seek shade between 10 a.m. and 4 p.m., when UV rays are at their strongest. If you’re outside during these hours, take extra precautions.
Vitamin C, Vitamin E, and green tea extract are powerful antioxidants that help reduce the oxidative stress caused by sun exposure. These ingredients can be found in serums and moisturizers and should be applied before sunscreen.
Dehydrated skin is more vulnerable to UV damage. Drink plenty of water and use a hydrating moisturizer daily. Well-hydrated skin is more resilient and better at healing from minor sun exposure.
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Wrong. Up to 80% of UV rays can penetrate clouds. Protection is necessary year-round.
Although melanin offers some protection, dark skin can still suffer from sun damage and skin cancer. Everyone needs to wear sunscreen.
Sunscreen wears off due to sweat, water, and time. Reapplication every 2 hours is essential when outdoors.
Even with the best intentions, some sun damage may still occur. Luckily, various dermatological treatments can help:
Dr Shaun Segal recommends a skin assessment to determine the best treatment plan based on the type and extent of damage.
Practicing daily sun protection habits results in:
Skin that is consistently protected from the sun not only looks better but also functions better, staying firm, hydrated, and strong against environmental stress.
Understanding sun damage and prevention is essential for maintaining lifelong skin health. With consistent sun protection practices and professional guidance, you can dramatically reduce your risk of skin aging and disease. Simple daily habits like applying sunscreen, wearing protective clothing, and staying hydrated can make a world of difference.
Let Dr Shaun Segal’s expert tips guide your journey to healthier, safer skin. Prevention starts today—because your skin remembers every moment under the sun.