title: Efficacy of Punica granatum L. hydroalcoholic extract on properties of dyed hair exposed to UVA radiation.
abstract: The solar radiation promotes color fading of natural and dyed hair by free radical generation, which oxidize the pigments, and it has been proposed the incorporation of antioxidants in order to reduce the alterations of hair color. Due to its high content of polyphenols and tannins, which are potent antioxidants, the hydroalcoholic extract of Punica granatum L. (pomegranate) was used in this research. Hair care formulations containing pomegranate extract were applied to red dyed hair tresses, and these were exposed to UVA radiation. Non-ionic silicone emulsion presenting color protection properties were also used for comparison purpose between the results obtained with different treatments, including silicone in combination with the pomegranate extract. The pomegranate extract at 5.0% and 10.0%w/w was effective in preventing the hair color fading in 37.6% and 60.8%, respectively, but the association of hydroalcoholic extract and non-ionic silicone emulsion is not encouraged. Mechanical properties were not affected by UVA radiation, since significant differences in breaking strength were not observed. Considering the conditions which the tresses have been exposed, it was concluded that the pomegranate extract at 10.0% w/w in hair care formulations are effective in reducing color fading of red dyed hair.
authors: School of Pharmaceutical Sciences of University of São Paulo, 580 Prof. Lineu Prestes Avenue, Bl-13/15, São Paulo, SP, Brazil.
authors: Michelli Ferrera
authors: MF
authors: Dario
authors: Richard
authors: R
authors: Pahl
authors: Jordana Rodrigues
authors: JR
authors: de Castro
authors: Fernando Soares
authors: FS
authors: de Lima
authors: Telma Mary
authors: TM
authors: Kaneko
authors: Claudinéia A S O
authors: CA
authors: Pinto
authors: André Rolim
authors: AR
authors: Baby
authors: Maria Valéria Robles
authors: MV
authors: Velasco
mesh_terms: D000438:Alcohols / Q000737:chemistry*; D000975:Antioxidants / Q000302:isolation & purification / Q000494:pharmacology; D006197:Hair / Q000187:drug effects* / Q000528:radiation effects*; D006202:Hair Dyes; D006801:Humans; D029561:Lythraceae / Q000737:chemistry*; D055595:Mechanical Phenomena; D010936:Plant Extracts / Q000302:isolation & purification / Q000494:pharmacology*; D014466:Ultraviolet Rays / Q000009:adverse effects*
chemical_list: D000438:Alcohols; D000975:Antioxidants; D006202:Hair Dyes; D010936:Plant Extracts