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The international Radura logo, used to show a food has been treated with ionizing radiation. A portable, trailer-mounted food irradiation machine, c. 1968 Food irradiation (sometimes American English: radurization; British English: radurisation) is the process of exposing food and food packaging to ionizing radiation, such as from gamma rays, x-rays, or electron beams.
The U.S. Food and Drug Administration is considering a ban on certain hair-straightening chemicals that have been used by Black women for years and that research shows may increase the risk of ...
Lead in the bones, teeth, hair, and nails is bound tightly and not available to other tissues, and is generally thought not to be harmful. [177] In adults, 94% of absorbed lead is deposited in the bones and teeth, but children only store 70% in this manner, a fact which may partially account for the more serious health effects on children. [ 23 ]
Without activation, the persulfate anion is known to react with some organic chemicals, although with slow kinetics. [13] When melanin is oxidized, oxygen gas is released. [12] Products for bleaching one's hair at home usually contain a 6% solution of hydrogen peroxide, while products for use in a hair salon can contain up to 9%. [12]
In fact, a protein found in human hair called L-cysteine is sometimes used as an additive to certain foods. L-cysteine is an amino acid found in keratin, which some food manufacturers use to ...
Paul Bruinooge/Getty Images. Come into the salon with a crystal-clear idea or, better yet, a few visuals of the color and tone you’re hoping to achieve rather than a vague description. Your idea ...
A variety of human hair colors; from top left, clockwise: black, brown, blonde, white, red. Human hair color is the pigmentation of human hair follicles and shafts due to two types of melanin: eumelanin and pheomelanin. Generally, the more melanin present, the darker the hair. Its tone depends on the ratio of black or brown eumelanin to yellow ...
Look for foods rich in "fat-soluble vitamins, B-complex vitamins, omega-3 fatty acids, and iron to support hair health," says Valerie Agyeman, RD, dietitian and host of women's health podcast ...