Sunscreens: Is Looking at Sun Protection Factor Enough?
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چکیده
The sun protection factor (SPF) has widely been used to evaluate the protective value of sunscreens. However, SPF only reflects the effectiveness of the sunscreen to protect against acute sunburn which is mainly due to ultraviolet B (UVB) radiation. The deleterious effects of UVB are well known and UVB was believed in the past to be the spectrum responsible for the damages arising from ultraviolet radiation (UVR). However, there has been increasing evidence pointing to the photocarcinogenicity and the photoaging potential of ultraviolet A (UVA) radiation even at suberythemogenic doses. Therefore, broad-spectrum solar protection covering both the UVA and the UVB range is desirable, and choosing sunscreen products simply basing on the SPF value will not be adequate.
منابع مشابه
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