Patent · US Active

Method for chemical smoothing of human hairs

US9421160B2 · kind B2 · utility

1Cited by

6References

8Claims

0Family size

Assignee

Henkel AG & Co. KGaA · DE

Inventors

Erik Schulze zur Wiesche · Hamburg, DE
Stephan Schwartz · Wedel, DE
Birgit Rautenberg-Groth · Ellerau, DE

Key dates

Filing date	Dec 15, 2014
Grant date	Aug 23, 2016
Priority date	—
Expiry date	Dec 15, 2034

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K2800/884
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A method for reshaping, in particular for straightening, keratin-containing fibers, in particular human hair, includes (i) applying a pretreatment agent including amino-functional silicone(s) with terminal hydroxyl group(s) onto the keratinic fibers and left there, (ii) optionally drying fibers, (iii) treating the fibers in the moist or dried state with a reshaping agent which, relative to the weight of the reshaping agent, includes 0.05 to 20 wt. % of guanidine and/or guanidinium salt(s), (iv) optionally straightening the fibers with a comb or a brush during the reshaping treatment, (v) shampooing the fibers with a shampoo which has a pH of 2.5 to 6.5, followed by rinsing and neutralizing the fibers, and (vi) optionally subsequently additionally mechanically deforming the fibers with exposure to heat. The methods distinctly minimizes the negative consequences of reshaping, in particular electrostatic charging and hydrophilization of the hair.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.