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To the Editor.—
During the summer of 1971 I noticed teenagers living on Cape Cod had less evidence of acne than those in the Adirondacks. Intriguing, for both groups were casually similar: healthy, rested New England teenagers with good diets, no pressures," and enjoying fun outdoors. Their sport and water activities varied, though both groups were obviously outside a lot. The Adirondack and Cape Cod areas enjoyed comparable good weather. Neither suffered a wet, miserable July so the ultraviolet light factor should have been equal.Why the difference? Could it be salt? Water dries by evaporation. Fresh water dries clean; salt water leaves a fine film that is characteristically sticky and granular. Many people dislike the feeling of this residual salt deposit, and shower it off after swimming in the ocean. But teenagers rarely bother. The salt remains on the face, shoulders, and back. Salt dries the skin. Indeed, the
Lennihan R. A Salt Lotion for the Treatment of Acne Vulgaris. Arch Dermatol. 1972;105(5):761. doi:10.1001/archderm.1972.01620080083029
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