Among the many Korean skincare products that have emerged in the UK market, few have resonated quite like SPF. Not only do some of the best Korean sunscreens for the face rival their British peers on several levels, and not only do they tend to be more cosmetically elegant – meaning they are more enjoyable to apply and use – but they also quantify their protection against UVA rays. UVA rays are responsible for signs of ageing, such as fine lines and dark spots. Our SPF grading system, meanwhile, only accounts for UVB rays, which contribute to sunburn and skin cancer. And while the term “broad-spectrum” does account for both UVA and UVB rays, it doesn’t indicate the level of protection from the former.