sun protection factor

  1. SPF.

Origin of sun protection factor

First recorded in 1975–80

Words Nearby sun protection factor Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

Scientific definitions for sun protection factor

sun protection factor

  1. A measure, expressed numerically, of the degree to which a preparation containing sunscreen protects the skin from ultraviolet rays. The higher the value, the greater the level of protection from sun damage to the skin.

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