Document Detail


Assessment of styling performance in hair gels and hair sprays by means of a new two-point stiffness test.
MedLine Citation:
PMID:  20939974     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A new two-point bending stiffness method on flat hair strands was developed and validated after application of hair styling gels and hair styling sprays. A special mold was used to align single hair fibers after applying the formulations to the hair. The styling gels used contain different commercially available thickeners and styling polymers, e.g., carbomer, acrylates/beheneth-25 methacrylate copolymer, Polyquaternium-86, PVP, VP/VA copolymers, and VP/methacrylamide/vinylimidazole copolymer. Evaluation of hair sprays was performed after spray application on flat hair strands. Commercially available hair styling resins were used, e.g. acrylates/t-butylacrylamide copolymer, octylacrylamide/acrylates/butylaminoethyl methacrylate copolymer, and VP/VA copolymer (30:70). The new stiffness test method provided the best correlation with practically relevant sensory assessments on hair strands and a panel test in which styling gels were evaluated. However, we did not observe a correlation between the new stiffness method on flat hair strands and practical assessments in hair spray application. We postulate that different polymer/hair composites are responsible for these discrepancies. Hairs on model heads for half-side testing are spot-welded after spray application, while hairs are seam-welded in the stiffness test after alignment of single hair fibers. This alignment is necessary to achieve reproducible results.
Authors:
Peter Hoessel; Solveig Riemann; Robert Knebl; Jens Schroeder; Gerd Schuh; Catalina Castillo
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of cosmetic science     Volume:  61     ISSN:  1525-7886     ISO Abbreviation:  J Cosmet Sci     Publication Date:    2010 Sep-Oct
Date Detail:
Created Date:  2010-10-13     Completed Date:  2010-12-07     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9814276     Medline TA:  J Cosmet Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  343-52     Citation Subset:  IM    
Affiliation:
BASF SE, 67056 Ludwigshafen, Germany.
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MeSH Terms
Descriptor/Qualifier:
Double-Blind Method
Hair / chemistry*
Hair Preparations / chemistry*,  standards
Humans
Polymers / chemistry*
Chemical
Reg. No./Substance:
0/Hair Preparations; 0/Polymers

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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