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Design, characterization, and clinical evaluation of argan oil nanostructured lipid carriers to improve skin hydration

Authors Tichota DM, Silva AC, Sousa Lobo JM, Amaral MH

Received 13 March 2014

Accepted for publication 27 April 2014

Published 11 August 2014 Volume 2014:9(1) Pages 3855—3864

DOI https://doi.org/10.2147/IJN.S64008

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 5

Deise Michele Tichota,1 Ana Catarina Silva,2,3 José Manuel Sousa Lobo,2 Maria Helena Amaral2

1Federal University of Rio Grande do Sul, Porto Alegre, 2Laboratory of Pharmaceutical Technology/Centre of Research in Pharmaceutical Sciences, Faculty of Pharmacy, University of Porto, 3Faculty of Health Sciences, Fernando Pessoa University, Porto, Portugal

Abstract: Given its advantages in skin application (eg, hydration, antiaging, and protection), argan oil could be used in both dermatological and cosmetic formulations. Therefore, the preparation of nanostructured lipid carriers (NLCs) using argan oil as a liquid lipid is a promising technique, since the former constitute well-established systems for dermal delivery. The aim of this work was to develop a topical formulation of argan oil NLCs to improve skin hydration. Firstly an NLC dispersion was developed and characterized, and afterward an NLC-based hydrogel was prepared. The in vivo evaluation of the suitability of the prepared formulation for the proposed application was assessed in volunteers, by measuring different skin-surface parameters for 1 month. An argan oil NLC-based hydrogel formulation was successfully prepared and characterized. Moreover, the entrapment of the NLCs in the hydrogel net did not affect their colloidal sizes. Additionally, it was observed that this formulation precipitated an increase in skin hydration of healthy volunteers. Therefore, we concluded that the preparation of NLC systems using argan oil as the liquid lipid is a promising strategy, since a synergistic effect on the skin hydration was obtained (ie, NLC occlusion plus argan oil hydration).

Keywords: argan oil, nanostructured lipid carriers, NLC, hydrogels, skin hydration
 

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