Shiseido Company, Limited

Edward Borish

Thomas M Schultz

Andrew Savaides

Sanae Kubo

Adalberto Fleitas

Judith A Cohee

Bridget Ijeh

By providing a neutralizing solution formulated with an alkaline pH, for use with a conventional reducing lotion, a long-lasting, permanently waved head of hair is attained. Furthermore, by employing the neutralizing solution of the present invention, substantially reduced hair damage and substantially improved curl retention and formation is attained. In the preferred embodiment, the alkaline pH neutralizing solution of the present invention is attained by employing a bromate salt in combination with at least one pH adjusting agent. If desired, hair conditioning and wave enhancing additives may also be employed. Preferably, the bromate salt employed comprises one selected from the group consisting of sodium bromate and potassium bromate, with sodium bromate.

Formulation and application method for a neutralizing agent in the

A highly effective, ammonia-free, permanent waving lotion is attained by employing one a reducing agent consisting of a thiol compound or mercaptan in combination with an alkalizing agent consisting of an alkanolamine and an alkali metal hydroxide. In accordance with this invention, the reducing agent is employed either independently as an aqueous solution or in association with desired additives for imparting additional benefits to the permanently waved hair. Preferably, the reducing agents of the present invention are employed in a permanent waving lotion having a pH ranging between about 5.5 and 10.0. By employing this invention, long lasting permanently waved hair is attained with substantially less malodor being produced, thereby providing increased comfort to the stylist and the person who undergoes permanent waving.

Permanent waving lotion and method of use

An improved, highly effective permanent waving lotion is attained by employing a reducing agent which consists of a lower alkyl ester of cysteine in combination with a thiol compound selected from the group consisting of ammonium salts and glyceryl esters of thioglycolic acid, thiolactic acid and thiopropionic acid. By employing the reducing agent of this invention, the pH level at which the permanent wave is performed can be substantially reduced, thereby improving comfort and reducing adverse reactions. The reducing agent of this invention is employed either as an aqueous solution of the two components or in association with desired additives for imparting additional benefits to the permanently waved hair. Preferably, the reducing agents of the present invention are employed in a permanent waving lotion having a pH ranging between about 5.0 and 9.5.

Reducing agents for permanent waving of hair

A highly effective permanent waving lotion is attained by employing one compound selected from the group consisting of glyceryl monothiopropionate, glyceryl thiolactate, and combinations of glyceryl monothiopropionate and glyceryl thiolactate as the sole reducing agent. In accordance with this invention, the reducing agent is employed either independently in an aqueous solution or in association with desired additives for imparting additional benefits to the permanently waved hair. Preferably, the reducing agents of the present invention are employed in a permanent waving lotion having a pH ranging between about 6.0 and 9.5. In this way, processing time is reduced and long lasting permanently waved hair is attained with substantially less malodor being produced.

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Mahwah, NJ, United States of America

Edward Borish