Determination of sun protection factor (SPF) of sunscreens by ultraviolet spectrophotometry
نویسندگان
چکیده
منابع مشابه
Measuring the Sun Protection Factor (SPF) of Sunscreens
Sun protection products, including sunscreen lotions, are designed to absorb or reflect the sun’s UV radiation to protect the skin from damage. The rating system for sunscreens specifies a Sun Protection Factor (SPF) value, which can be thought of as a time factor for the protection of skin compared to exposure without any protection. For example, if a person would show visible erythema (sunbur...
متن کاملUltraviolet damage to the eye revisited: eye-sun protection factor (E-SPF®), a new ultraviolet protection label for eyewear
Ultraviolet (UV) radiation potentially damages the skin, the immune system, and structures of the eye. A useful UV sun protection for the skin has been established. Since a remarkable body of evidence shows an association between UV radiation and damage to structures of the eye, eye protection is important, but a reliable and practical tool to assess and compare the UV-protective properties of ...
متن کاملSunscreens: Is Looking at Sun Protection Factor Enough?
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 ultravio...
متن کاملComparison of UVA protection afforded by high sun protection factor sunscreens.
UVA protection afforded by 6 different sunscreens with a sun protection factor of 21 or more was compared by means of the persistent pigmentation darkening method. Colorimetric and visual assessment showed significant differences in UV radiation-induced pigmentation at 2 hours. The labeled sun protection factor of the tested sunscreens was not predictive of UVA protection level.
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ژورنال
عنوان ژورنال: Revista Brasileira de Ciências Farmacêuticas
سال: 2004
ISSN: 1516-9332
DOI: 10.1590/s1516-93322004000300014