| Some hair care products will have sunscreens in the form of actual ingredients, but will not have an SPF factor added. |
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| People who react to standard sunscreens might look for a lotion containing physical blockers like zinc oxide or titanium dioxide. |
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| Studies have shown that using sunscreens that safeguard against UVB rays only lead consumers into a false sense of security. |
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| All clerestories face due north and are further protected from direct sunlight by eyebrow-like laminated sunscreens of safety glass. |
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| Patients should select broad-spectrum sunscreens that contain agents that block UVB and UVA with an SPF of 30 or greater. |
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| As such they are well suited as intracellular sunscreens, particularly in oxygenic phototrophic symbioses. |
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| Instead of sunscreens, use sunblocks, which are less irritating to sensitive skin. |
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| If you find sunscreens irritating, you're probably reacting to a perfume or a preservative like methylparaben or propylparaben. |
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| A few years ago, most sunscreens contained ingredients known as PABAs, para-aminobenzoic acid and its derivatives. |
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| To measure the efficacy of sunscreens, researchers used electron spin resonance spectroscopy to measure free radical production induced by UVA in the skin of white people. |
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| The sunscreens must offer broad-spectrum protection and a sun protection factor of 15 or higher. |
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| Dermatologists warn that not even the best sunscreens prevent all the potentially cancer-causing damage that ultraviolet light does to skin. |
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| Gransurf 50C also functions as a wetting agent for pigments and as a coupling agent for emollients, moisturizers and sunscreens. |
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| Zinc oxide and titanium dioxide are inorganic chemicals while the other sunscreens are organic chemicals. |
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| There are the sunscreens, sunblocks and sunless tanning lotions, with labels promising a veritable alphabet soup of SPFs and UV protection. |
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| It is also important to note that photochemical reactions in sunscreens proceed almost exclusively from the triplet excited state reservoir. |
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| Sunscreens chemically absorb harmful ultraviolet rays, while sunblocks physically deflect them. |
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| To most Americans, nanotechnology means limited improvements, as in stain-resistant clothing, superdurable bowling balls or transparent sunscreens. |
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