WHAT DOES SUNSCREEN DO?
It has been shown in scientific studies that sunburn can occur despite the use of sunscreen (15 SPF) during winter months in a mild climate. In addition, sunburn may still occur while wearing stronger sunscreens (30 SPF). Although they may lessen or even eliminate the first phase of redness and inflammation, the second and third phases may not be prevented by wearing sunscreen. Since it is the last phase [Apoptosis] that has been linked to skin cancer, this reflects a potential lack of efficacy.
WHAT SHOULD SUNSCREEN DO?
Sunscreen should help prevent all three phases of sunburn and, most importantly, block peeling, or, apoptosis following exposure to solar radiation.