Method and composition for waving and straightening hair

Details Method and composition for waving and straightening hair Method and composition for waving and straightening hair

2005-05-09

2009-06-23

Venkat, Jyothsna A (Department: 1619)

Drug, bio-affecting and body treating compositions

Live hair or scalp treating compositions

Permanent waving or straightening

C424S070200, C132S202000, C132S203000

Reexamination Certificate

active

07550137

ABSTRACT:
An improved process and composition for straightening or waving hair is achieved combining ammonium bisulfite and ethanolamine sulfite in a single mixture which is maintained at a pH of between about 6.5 and 8.0. By employing the present invention, long lasting, waved or straightened hair is attained. Furthermore, using the hair waving/straightening composition and method of the present invention, the desired waving and/or straightening of hair fiber is achieved in a single step, without the need for a separate application of an oxidizing or neutralizing agent.

REFERENCES:
patent: 5338540 (1994-08-01), Lee et al.
patent: 5350572 (1994-09-01), Savaides et al.
patent: 5775342 (1998-07-01), Hohenstein et al.
patent: 6378530 (2002-04-01), Rezvani et al.

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