Proteins as Hair Styling Agents

Abstract

The perming of hair is a common styling procedure with negative impact on the overall properties of the hair fibers. Usually, this process uses harsh chemicals to promote the disruption of disulfide bonds and the formation of new bonds to change the shape of hair. Here, we explored bovine serum albumin (BSA), silk fibroin (SF), keratin and two fusion recombinant proteins (KP-UM and KP-Cryst) as new perming agents. A phosphate buffer prepared at different pH values (5, 7 and 9) was used to apply the proteins to virgin Asian hair, and a hot BaByliss was used to curl the hair fibers. To assess the potential of the protein formulations for hair styling, the perming efficiency and the perming resistance to wash were measured. Furthermore, the fiber water content was evaluated to assess if the proteins protected the hair during the styling process. Despite all of the proteins being able to assist in the curling of Asian hair, the best perming efficiency and perming resistance to wash results were observed for BSA and keratin. These proteins showed perming efficiency values close to that measured for a commercial perming product (chemical method), particularly at pH 5 and 9. The increase in the hair’s internal and external water contents revealed a protective effect provided by the proteins during the application of heat in the styling procedure. This study shows the potential of proteins to be used in the development of new eco-friendly hair styling products.

The Role of Burdock and Black Radish Powders Obtained by Low-Temperature Drying in Emulsion-Type Hair Conditioners

“…Hair conditioner formulations were developed based on the available published data [5,[23][24][25][26][27][28][29][30][31][32] with slight modifications. A total of seven emulsions were prepared, containing different plant powders at varying concentrations.…”

“…λ*-is the photon transport mean free path in the analyzed dispersion; ϕ-is the volume fraction of emulsion particles; d-is the mean diameter of particles; g, Q s -are the optical parameters given by the Mie theory; X i -is the average backscattering for each minute of measurement; X BS -is the average X i ; n-is the number of scans [29].…”

Promotion of glyoxylic acid penetration into human hair by glycolic acid

“…Ogawa et al calculated the extent of super contraction as the ratio of the percentage of the change in length to the initial dry length of a hair bundle before reduction [15]. Tinoco et al evaluated the perming efficiency by counting hair loops after the perm [16]. In this study, we adopted the ratio of the hair bundle length after the hair straightening treatment followed by washing it 10 times to the length when fully stretched by subtracting the initial equilibrium length.…”

Therapeutic Textiles Functionalized with Keratin-Based Particles Encapsulating Terbinafine for the Treatment of Onychomycosis

“…The keratin solution was then dialyzed against distilled water for 5 days at room temperature using a dialysis membrane with a 14 kDa cutoff. [39,57]…”