Warshauer D M, Steinbaugh J R
Am Fam Physician. 1983 Jun;27(6):109-14.
Sunburn, wrinkling and malignancies are the frequent results of excessive sun exposure. Photosensitivity and photoallergic or phototoxic reactions are less commonly observed. Sunscreens containing para-aminobenzoic acid (PABA), PABA esters and benzophenones offer substantial protection, allowing even fair-skinned persons to participate freely in outdoor activities. These products are now rated and assigned a sun protection factor (SPF). Their routine use should be encouraged.
晒伤、皱纹和恶性肿瘤是过度暴露于阳光下常见的后果。光敏性以及光过敏或光毒性反应则较少见。含有对氨基苯甲酸（PABA）、PABA酯和二苯甲酮的防晒霜能提供显著的防护作用，甚至能让肤色白皙的人自由地参加户外活动。这些产品现在都有评级并被赋予了防晒系数（SPF）。应鼓励日常使用这些产品。
