People often spend hundreds of pounds on skincare products to maintain a youthful appearance. However, Dr Amir Khan, an NHS GP and regular on ITV shows like Lorraine and Good Morning Britain, warns that neglecting one essential product renders that routine ineffective. In a recent episode of his podcast No Appointments Necessary, he identified the sun as the 'biggest ageing enemy' that most people encounter daily without thinking about it.
The Importance of Daily SPF
Dr Khan emphasized that applying sunscreen every day is crucial. He stated, 'The biggest ageing thing we have in this world is the sun. The skin changes that make us look older are more likely due to sun exposure than they are actually due to age.' He personally uses SPF daily and encourages others to do the same to prevent premature aging caused by sun damage.
How the Sun Damages Skin
Collagen, the protein that provides skin with elasticity, is degraded by the sun through a process called photoageing. Ultraviolet (UV) radiation not only damages existing collagen structures but also prevents the formation of new ones. Dr Khan explained, 'Without collagen, we start to sag and wrinkle.' Sunscreen helps protect against collagen depletion by reducing DNA-level damage caused by UV rays.
Sun Safety Beyond Sunscreen
While sunscreen is vital, the NHS notes that it alone is not enough. People should combine it with other sun safety practices, such as seeking shade during peak UV hours. UV rays can penetrate clouds and glass, making SPF essential year-round, not just in summer.
How Often to Apply SPF
Experts recommend applying at least SPF 30 every day. For those working indoors with brief outdoor exposure, a single morning application may suffice. However, individuals spending extended periods outside should reapply every two hours to maintain protection.
Proper Sunscreen Application
According to the NHS, 'Most people do not apply enough sunscreen.' Adults should aim for about six to eight teaspoons to cover their entire body. Application should occur 30 minutes before going out and again just before exposure. Common missed areas include the face, neck, ears, and scalp (if thinning or bald). Reapplication every two hours is essential because the sun can dry sunscreen off the skin.
For more details on limiting sun damage, consult the NHS guidelines.
