Linked from
The 11 pages that link to Sunburn, each with the reason it gives.
SunscreenRelated: Preventing sunburn is the outcome most directly represented by SPF.
UltravioletRelated: It is a familiar biological consequence of UVB exposure.
Skin cancerRelated: Severe or repeated sunburns are associated with increased melanoma risk.
Sun protectionRelated: It is a visible warning that exposure has exceeded the skin's tolerance.
BenzocaineRelated: Some topical products use benzocaine for temporary relief of sunburn pain.
SunlightRelated: Ultraviolet sunlight can injure skin cells even when visible light feels mild.