SPF, or sun protection factor, is a measure of how well a sunscreen protects the skin from UVB rays — the primary cause of sunburn, says Dr Florence Nadal, Director of Scientific Communications for Lancaster Monaco. There are four levels of photoprotection: Low (typically SPF 6 to 10), medium (SPF 15 to 25), high (SPF 30 to 50) and very high (SPF 50+). Most dermatologists recommend opting for the highest protection regardless of your skin tone or the intensity of the sun. Try the Lancaster Sun Perfect Illuminating Cream SPF50, which boasts ultra-broad spectrum protection against damaging UVA, UVB, infrared and visible light.
