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Article: Photoprotection of relaxed hair: Croda details new data on its UVB absorbing polyester polyquat.
- Article from:
- Household & Personal Products Industry
- Article date:
- April 1, 2004
- Author:
CopyrightCOPYRIGHT 2004 Rodman Publications, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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IT COULD BE ARGUED that highly pigmented hair, such as that of the African-American or Asian population, is not as susceptible to UV damage, and therefore, does not need to be protected. It is thought that the higher melanin content of these hair types acts as a shield against UV damage. However, melanin itself cannot protect hair from all of the effects of UV radiation. (1) In the case of relaxed hair, it has been subjected to high pH chemical insult. Given this already damaged state, relaxed hair may, in fact, be uniquely vulnerable to the effects of UV radiation.
During the past decade, Croda has developed an extensive claims validation program to examine and ...