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By: TOM BRANNA

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Hair Bleach Kit Patented by Procter & Gamble U.S. Patent No. 7,541,023 B2; The Procter & Gamble Company has been awarded a patent for a hair bleach product in kit form. It is comprised of a peroxide-based developer component containing, by weight, approximately 6-12% hydrogen peroxide; a powder activator component comprised of 40-80% by weight of an alkali metal persulfate selected from the group consisting of sodium persulfate, potassium persulfate and ammonium persulfate, an ...

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