Q&A: What sunscreen is best? A dermatologist offers advice on protecting your skin

Sunburn is a sign that skin has experienced significant levels of damage. Ultraviolet light can change a person’s DNA structure, which can lead to cancer. At the same time, choosing from the multitude of modern sunscreens can be overwhelming. Health & Medicine editor Nadine Dreyer asked dermatologist Bianca Tod what to look for in sun protection.