Design and characterization of greener sunscreen formulations based on mica powder and a biosurfactant extract

The mining industry produces an earth-derived silicate mineral, called mica, which is included in many cosmetic formulations. Mica minerals produce a shimmering effect on the skin and simultaneously provide physical protection against the harmful effects of the sun. On the other hand, the corn wet-m...

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Bibliographic Details
Published in:Powder technology 2018-03, Vol.327, p.442-448
Main Authors: Rincón-Fontán, M., Rodríguez-López, L., Vecino, X., Cruz, J.M., Moldes, A.B.
Format: Article
Language:English
Subjects:
Antioxidants
Biomedical materials
Biosurfactant
Biosurfactants
Colorimetric analysis
Composició
Composite materials
Corn
Corn steep liquor
Cosmètics
Enginyeria química
Formulations
Mica
Mica miners
Minerals
Mining
Mining industry
Powder
Radiació ultraviolada
Silicate mineral
Skin
Studies
Sun protection factor
Sun screens
Sunscreen
Sunscreens (Cosmetics)
Surfactants
Ultraviolet radiation
UV light
Wavelengths
Àrees temàtiques de la UPC
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Summary:The mining industry produces an earth-derived silicate mineral, called mica, which is included in many cosmetic formulations. Mica minerals produce a shimmering effect on the skin and simultaneously provide physical protection against the harmful effects of the sun. On the other hand, the corn wet-milling industry produces an effluent that contains a natural extract with antioxidant and biosurfactant properties, which could possibly be used to increase the protective effect of mica minerals against ultraviolet light (UV light). In this study, we determined the sunscreen protection factor (SPF) of different biocomposites based on different mica minerals alone or mixed with a biosurfactant extract obtained from the corn industry. The SPF values of water-based formulations containing mica with and without the biosurfactant extract were determined by means of a standardized method in which the absorbance was determined at wavelengths between 290 and 320nm. The SPF values obtained for the mica minerals in the absence of biosurfactant ranged between 0.2 and 11, and in some cases the addition of biosurfactant increased the SPF values of the micas by more than 2000%. [Display omitted] •Silicate mineral, named mica, from mining industry for sun protection•Biosurfactant from agro-industrial stream as sunscreen agent•Biocomposite based on mica and biosurfactant as novel sunscreen formulation•Synergistic effect between mica and biosurfactant onto UV light absorption
ISSN:0032-5910
1873-328X
DOI:10.1016/j.powtec.2017.12.093