It’s that time of year again when I start cracking the whip about protecting your skin and the problems that can happen if you don’t!
One of our must-haves is sunblock. It works by protecting the skin from the harmful effects of ultraviolet (UV) radiation from the sun. UV radiation includes UVA and UVB rays, both of which can damage the skin and lead to various skin issues, including cancer, sunburn and premature ageing.
How does sunblock work?
Sunblocks use two main types of active ingredients: physical blockers and chemical absorbers.
Physical blockers, such as zinc oxide and titanium dioxide, work by sitting on the skin’s surface and reflecting or scattering UV radiation away from the skin. These ingredients are often preferred for their broad-spectrum protection, shielding the skin from both UVA and UVB rays. They are also less likely to cause skin irritation, making them suitable for sensitive skin and for use in products designed for children.
Chemical absorbers, on the other hand, function by absorbing UV radiation and converting it into harmless heat. These ingredients include compounds like avobenzone, oxybenzone, and octinoxate. Each chemical absorber is formulated to target specific wavelengths of UV radiation, thereby providing comprehensive protection when combined in a single product. Very much like a science project but very fascinating how it works whilst we bask in the sun.
Proper application is crucial for sunblock efficacy. It should be applied generously and evenly to all exposed skin at least 15–30 minutes before sun exposure. To maintain protection, reapplication every two hours or immediately after swimming or sweating is necessary.
