Permanent wave system using ammonium bisulfite prewrap

Details Permanent wave system using ammonium bisulfite prewrap Permanent wave system using ammonium bisulfite prewrap

1978-07-31

1980-07-29

McNeill, G. E.

Toilet

Nail device

Compound tools

424 72, A45D 700

Patent

active

042145961

ABSTRACT:
This invention relates to an improvement in the method of treating hair in which water wet hair is wrapped around rollers, a mercaptan-containing solution is applied to the hair on the rollers, and the mercaptan-wetted hair is thereafter neutralized with an oxidizing agent. This improvement comprises wetting the hair prior to wrapping it with an aqueous solution of a prewrap agent selected from the group consisting of alkali metal and ammonium sulfites and alkali metal and ammonium bisulfites. These prewrap agents are present at about 0.1 to about 1.0 Molar, at a pH of about 6.5 to about 7.5 and cleave no more than about 5 percent of the hair disulfide bonds before the mercaptan-containing solution is applied.

REFERENCES:
patent: 2351718 (1944-06-01), Speakman
patent: 2615828 (1952-10-01), Haefele
patent: 2836185 (1958-05-01), Hervey
patent: 3472604 (1969-10-01), Dasher et al.
patent: 3533417 (1970-10-01), Bartoszewicz
M. S. Balsam & Edward Sagarin-Cosmetics, Mar. 1972, pp. 208-209.

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