An expert discusses how UV radiation makes up about 7% of the sun’s energy and penetrates the skin, causing aging, hyperpigmentation, and inflammation. Visible light and infrared radiation contribute to skin damage, with blue light being more harmful than red light due to its deeper penetration.
An expert discusses how UV radiation causes DNA damage, accelerating skin aging and cancer risk. Visible light and infrared radiation induce oxidative stress and hyperpigmentation, especially in darker skin tones. Conventional sunscreens shield against UV radiation but offer limited visible light and infrared protection. Mineral filters (zinc oxide, titanium dioxide) provide broad coverage, while chemical filters (oxybenzone, avobenzone) absorb UV radiation but lack efficacy against visible and infrared radiation.
An expert discusses how oxidative stress accelerates skin aging by damaging cells through free radicals, which form from UV exposure. Antioxidants such as vitamins C and E, niacinamide, and polyphenols counteract this damage. Combining antioxidants with sunscreen enhances protection, reducing free radical formation and optimizing skin health.
An expert discusses how dermatologists guide patients in selecting sunscreens based on skin type (fair skin, skin of color, sensitive skin), coexisting conditions, and environmental exposure (blue light, heavy sun). They recommend sun protection factor (SPF) levels and key ingredients and address adherence barriers. Beyond sunscreen, protective clothing, antioxidants, and physical blockers help shield against visible light and infrared radiation.
An expert discusses how an important part of personalized photoprotection is providing instructions to patients on how and when to apply and reapply sunscreen. It is advised that sunscreen be applied 20 to 30 minutes before going outdoors. It is critical for patients to reapply sunscreen every 2 hours or 4 times a day, depending on the length of time the patient is outdoors.
Test your knowledge of key words and terms associated with dermatology news from the previous week.
Discover essential sun protection strategies from Dr. Susan Taylor, focusing on the impacts of UV, visible light, and personalized sunscreen choices.
