منابع مشابه
TiO2:Mn nanoparticles as enhanced UVA absorption, photostable sunscreen components
Titanium oxide (TiO2) nanoparticles are added to sunscreens as they have broad absorbance across the whole UV spectrum. Although photostable, TiO2 nanoparticles can de-excite via surface states giving rise to reactive oxygen species (ROS) formation within the sunscreen formulation. An increased ROS load can degrade organic components within the sunscreen, such as UV absorbers or anti-oxidants, ...
متن کاملSunscreen Products as Emerging Pollutants to Coastal Waters
A growing awareness of the risks associated with skin exposure to ultraviolet (UV) radiation over the past decades has led to increased use of sunscreen cosmetic products leading the introduction of new chemical compounds in the marine environment. Although coastal tourism and recreation are the largest and most rapidly growing activities in the world, the evaluation of sunscreen as source of c...
متن کاملThe Sunscreen Filter
Sun care products have evolved extensively during the past four decades. In the 1970s and 1980s, an effective sunscreen was one that blocked burning UVB rays and permitted socalled healthy UVA rays to go through the skin. The emphasis was on protection from the then-perceived harmful UVB rays. In fact, UVA rays were termed friendly and beneficial tanning rays. A tan was considered healthy and a...
متن کاملTitanium Dioxide in Sunscreen
Titanium dioxide has been used in various industrial and cosmetic applications due to its unique elemental properties. This substance has a refractive index higher than most other compounds (n = 2.6142, in comparison to water at 20°C n = 1.33). This allows titanium dioxide to have an iridescent and bright quality. It has been used in the cosmetics industry for “whitening” and “thickening” in mu...
متن کاملSunscreen and immunosuppression.
Recently, Walker and Young (1997) reported that ultraviolet (UV) B sunscreens offer the same UVB protection factors against inflammation and immunosuppression in the mouse . The authors studied the relationship between photoprotection of inflammation and immunosuppression with monochromatic (Phi lips TL-01 tubes, A..,. _,= 311mll) UVB radiation. T he UVB dose-response curve for murine edema was...
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ژورنال
عنوان ژورنال: Boletín de la Sociedad Chilena de Química
سال: 2000
ISSN: 0366-1644
DOI: 10.4067/s0366-16442000000400017