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US 5,858,337 AGranted
Intermediate treatment composition for permanent wave
AssigneeKao Corporation
InventorsKazuyo Watatani, Hiroyuki Koga, Naohisa Kure
Life of this patent
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Abstract
An intermediate treatment composition for permanent wave, comprising at least one carbonate and/or at least one hydrogencarbonate. When the hair is treated with the intermediate treatment composition for permanent wave between treatments with the first and second compositions, mixed disulfides formed in the hair by the treatment with the first composition can be cleaved. Therefore, the wave-forming rate can be enhanced, and damage to the hair can also be prevented.
Claims13
A permanent waving process which comprises:
- a) treating hair with a first-package permanent wave composition having a pH of 4-8 to affect cleavage of S--S bonds in said hair;
- then,
- b) treating said hair with an intermediate treatment composition for permanent wave, consisting essentially of at least one carbonate or at least one hydrogen carbonate or both to cleave mixed disulfides formed in said hair by treatment with said first-packaged permanent wave composition;
- and then,
- c) treating said hair with a second-package wave composition.
2 more elements
Dependencies are inferred from the claim text.