Straighten curly hair with keratin peptides (original) (raw)

Changing the shape of hair with keratin peptides

RSC Advances, 2017

Here we propose a solution which will replace harsh reducing agents at alkaline pH by peptide formulations acting at neutral pH to change hair shape through the re-conformation of disulphide bonds.

Restoring important hair properties with wool keratin proteins and peptides

Fibers and …, 2010

Abstract: In this work the effect on hair of two types of keratin samples obtained from wool, was investigated. Fiber surface changes were evaluated by contact angle measurements. The effectiveness of these keratin ingredients to restore the mechan-ical properties and the moisture ...

Effect of a peptide in cosmetic formulations for hair volume control

International journal of cosmetic science, 2017

The capacity of hair to absorb water causes changes in its physical and cosmetic properties under different environmental conditions. Hence, the control of hair volume in variable relative humidity settings is an important topic in cosmetics. The behaviour of two types of hair, Caucasian and Asian, was studied regarding their volume change in different relative humidity conditions. The ability of a peptide as a hair volume treatment was evaluated in two climate control formulations. Tresses of the two types of hair were tested in two relative humidity (RH) conditions: (A) variable relative humidity (2 hours 40% RH, followed by 2 hours 90% RH and 2 hours of 40% RH), and (B) continuous high relative humidity (90% RH for 6 hours). Changes in the hair tress volume were assessed throughout time. Hair treated with two climate control formulations, with and without a peptide (KP peptide), were tested under the two relative humidity conditions. Caucasian hair had a higher change in volume c...

Biology of Human Hair: Know Your Hair to Control It

Abstract Hair can be engineered at different levels—its structure and surface—through modification of its constituent molecules, in particular proteins, but also the hair follicle (HF) can be genetically altered, in particular with the advent of siRNA-based applications. General aspects of hair biology are reviewed, as well as the most recent contributions to understanding hair pigmentation and the regulation of hair development. Focus will also be placed on the techniques developed specifically for delivering compounds of varying chemical nature to the HF, indicating methods for genetic/biochemical modulation of HF components for the treatment of hair diseases. Finally, hair fiber structure and chemical characteristics will be discussed as targets for keratin surface functionalization. Graphical Abstract

Researches Concerning Chemical Modifications of Hair Keratin

Revista de Chimie, 2019

The work presents chemical procedures used to obtain a film or a hydrogel after hydrolyze treatment of hair at the temperature of 150oC and the pressure of 4.9 atm. In order to obtain the hydrogel, this treatment is followed by a stage of oxidation with hydrogen peroxide, and a stage of reduction with Na2S2O4 or, in another variant, a stage of oxidation with hydrogen peroxide and a treatment with NaOH in alcoholic medium, to form natrium cationic groups. The protein chains with sulphonic groups and natrium cations determine opposite electrostatic interactions, with the formation of a polymer loop that incorporate water. The evaluation of formed hydrogel was carried out by determining the swelling degree. We have used optical and SEM photomicrographs to determine morphological organization, and EDAX micropictures for chemical modifications. A cellulose film realized by growing Gluconoacetobacter xylinus bacteria was used as control sample.