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In 2003, chemical company BASF embedded nanoparticles of titanium dioxide into a nylon fabric, which can be used for sun protective clothing that maintains its UV protection when wet. [5] There is some indication that washing fabrics in detergents containing fabric brighteners, which absorb UV radiation, might increase their protective capability.
Surfing "long-sleeves" rashguard. A rash guard, also known as rash vest or rashie, is an athletic shirt made of spandex and nylon or polyester.The name rash guard reflects the fact that the shirt protects the wearer against rashes caused by abrasion, or by sunburn from extended exposure to the sun, as sun protective clothing.
The sun protection factor (SPF rating, introduced in 1974) is a measure of the fraction of sunburn-producing UV rays that reach the skin. For example, "SPF 15" means that 1 ⁄ 15 of the burning radiation will reach the skin, assuming sunscreen is applied evenly at a thick dosage of 2 milligrams per square centimeter [65] (mg/cm 2). It is ...
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According to the MD Anderson Cancer Center, an SPF 15 sunscreen blocks 93% of the sun’s harmful UVB rays, and SPF 30 blocks 97%. Once you get higher than that, you’re only getting a small ...
Ozone is transparent to most UV-A, so most of this longer-wavelength UV radiation reaches the surface, and it constitutes most of the UV reaching the Earth. This type of UV radiation is significantly less harmful to DNA, although it may still potentially cause physical damage, premature aging of the skin, indirect genetic damage, and skin cancer.
Ultraviolet (UV) radiation is ionizing in its shortest wavelengths but is not penetrating, so it can be shielded by thin opaque layers such as sunscreen, clothing, and protective eyewear. Protection from UV is simpler than for the other forms of radiation above, so it is often considered separately.
Sun protective clothing aids in the avoidance of both light and harmful UV rays. There is a whole panoply of properties that relate to material functionality and their use in performance fabric applications. [63] These include, inter alia: