Pharmacy Magazine recently hosted a webinar in partnership with Beiersdorf. Dermatologist, Dr Alice Prevost gave a comprehensive talk on the effect of ultraviolet (UV) radiation on the skin & the science behind sunscreen.
Focusing on the critical impact of UV radiation on skin health and the importance of effective sun protection, Dr Prevost explained the different types of UV radiation: UVA, which penetrates deeply and is associated with photoaging and skin cancer, and UVB, which primarily causes sunburn and is involved in vitamin D synthesis. Both types reach the Earth's surface and can lead to significant skin damage, particularly with repeated exposure.
Dr Prevost illustrated the effects of UV exposure through real-life examples, such as a truck driver and a toll booth worker, whose sun-exposed skin showed visible signs of damage, including wrinkles and pigmentation changes. She emphasised that early sunburns, especially in children, significantly increase the risk of developing skin cancer later in life. The session highlighted various skin conditions linked to chronic sun exposure, including actinic keratosis, basal cell carcinoma (BCC), and squamous cell carcinoma (SCC), stressing the importance of early detection and treatment.
Preventative measures were a central theme of the webinar with Dr Prevost advocating for sun avoidance, protective clothing, and the daily use of broad-spectrum sunscreen with an SPF of 15 or higher. She noted that regular sunscreen use could reduce skin aging by 24%. The discussion included practical guidelines for sunscreen application, recommending a specific amount for different body areas and emphasising the need for reapplication after swimming or sweating.
The webinar also addressed misconceptions about sun protection, such as the belief that natural remedies can effectively shield against UV damage. Dr Prevost clarified that while some dietary supplements may offer limited benefits, they should not replace traditional sun protection methods. She also discussed the unique considerations for individuals with darker skin tones, noting that while they have some natural protection, sunscreen remains essential to prevent photoaging and skin disorders.
Additionally, the session covered the safety of sunscreens, dispelling myths linking them to cancer and reinforcing the need for public education on sun safety, particularly in children and sports settings. Dr Prevost concluded by urging attendees to prioritise sun protection and skin health, advocating for better adherence to sun safety guidelines in schools and outdoor activities. Overall, the webinar provided valuable insights into the mechanisms of UV radiation, its effects on skin health, and the critical need for effective sun protection strategies.
