Stability of cosmetic emulsion containing different amount of hemp oil

Kowalska, Małgorzata; Ziomek, Monika; Żbikowska, Anna

doi:10.1111/ics.12211

Cited by 39 publications

(26 citation statements)

References 16 publications

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“…This technique is an optical method to characterize concentrated liquid dispersions without dilution [32,33]. Specifically, for this purpose, a Turbiscan MA 100 (Formulaction SA, L’Union, France), was used.…”

Section: Methodsmentioning

confidence: 99%

Stability Study of Sunscreens with Free and Encapsulated UV Filters Contained in Plastic Packaging

et al. 2017

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Sunscreens play a fundamental role in skin cancer prevention and in protection against photo-aging. UV filters are often photo-unstable, especially in relation to their vehicles and, being lipophilic substances, they are able to interact with plastic packaging. Finally, UV filter stability can be significantly affected by the routine use of the product at high temperatures. This work aims to study the stability of sunscreen formulations in polyethylene packaging. Butyl methoxydibenzoylmethane and octocrylene, both in a free form and as encapsulated filters were chosen as UV filters. Stability evaluations were performed both in the packaging and on the formulations. Moreover, a further two non-destructive techniques, near-infrared (NIR) spectroscopy and a multiple light scattering technique, were also used to evaluate the stability of the formulation. Results demonstrated clearly that all of the pack underwent significant changes in its elastic/plastic behavior and in external color after solar irradiation. From the evaluation of the extractable profile of untreated and treated packaging material an absorption of 2-phenoxyethanol and octocrylene were shown. In conclusion, the results highlighted clearly that a reduction of the UV filter in the formulation packed in high-density polyethylene/low-density polyethylene (HDPE/LDPE) material can occur over time, reducing the protective effect of the product when applied to the skin.

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Section: Methodsmentioning

confidence: 99%

Stability Study of Sunscreens with Free and Encapsulated UV Filters Contained in Plastic Packaging

et al. 2017

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“…At each vertex from the figure, 100% of a particular component (aqueous, oily and surfactant / co-surfactant phase) are represented 43 . Upper vertex corresponds to the surfactant, left vertex the oily phase and the right vertex the aqueous phase.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, surfactants are used as immiscible phase's conciliators with many uses in cosmetic products. They reduce interfacial tension and/or avoid the coalescence of the globules by guaranteeing a greater stability in the system 32,50 . The oil phase used in both diagrams consisted of isopropyl myristate, which is a mixture of isopropyl ester and myristic acid applied in cosmetic preparations.…”

Section: Resultsmentioning

confidence: 99%

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2017

IJPSR

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ABSTRACT:The appreciation of appearance is increasingly widespread in the media and involves a smile-related beauty standard. Any change in teeth compromises the appearance and may reflect on the psychological and social behaviour of the human being. Consequently, there has been technological advance in aesthetic and technical restorative materials, such as dental bleaching, as well as the development of more effective drug delivery techniques, such as micro-emulsions and liquid crystals. In this work, dispersed systems containing hydrogen peroxide were developed, characterized and evaluated for dental bleaching agents, with permeation potential in the dentinal tubules in order to optimize the bleaching process. Two pseudo-ternary diagrams were developed. Two formulations of the second diagram were selected and characterized (optical microscopy, pH, particle size, polydispersity index, zeta potential), and then, preliminary and accelerated stability study. In these formulations, the hydrogen peroxide was incorporated in concentrations 6 and 14%. The photomicrographs of the formulations revealed dark field, characteristic of the cubic phases. The product containing 6% hydrogen peroxide obtained pH values of 6.06 ± 0.06; Zeta potential of -6.36 ± 0.6 mV; Droplet size of 9.63 ± 0.01 mV and Polydispersity index of 0.15 ± 0.002. The product containing 14% hydrogen peroxide obtained pH values of 5.93 ± 0.06; Zeta potential of -4.99 ± 0.3 mV; Droplet size of 9.62 ± 0.006 nm and polydispersity index of 0.16 ± 0.007. The rheological profile of the analyzed samples presented with thixotropic behaviour. The results suggest that the nanodisperse systems obtained are liquid crystals of cubic phase.

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“…The form and size of the oil droplets was determined using an optical microscope. The emulsion color was evaluated by visual inspection [63,64].…”

Section: Stability and Characterization Of Emulsionsmentioning

confidence: 99%

Carminic Acid Linked to Silica Nanoparticles as Pigment/Antioxidant Bifunctional Excipient for Pharmaceutical Emulsions

et al. 2020

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The incorporation of pigments and natural polyphenols into inorganic matrices, resulting in a hybrid material that improves the resistance and chemical stability of the pigments and the antioxidant capacity of the materials, has been of great interest to the pharmaceutical, chemical and food industries. The aim of this work was to prepare and characterize a bifunctional pigment–antioxidant nanomaterial-based carminic acid-decorated solid core-mesoporous shell silica nanoparticles, evaluating its properties as a pigment, its antioxidant capacity and its properties as a chemical stabilizer of emulsions. The chemical stability of oil-in-water (O/W) Pickering emulsions was evaluated determining the stability of vitamin E solubilized in the oil phase. Carminic acid was attached through the action of coupling ethylcarbodiimide hydrochloride (EDC)/N-hydroxysuccinimide (NHS) agents, and the resulting spherical and homogeneous nanoparticles showed a diameter close to 175 nm. A notorious change of emulsion color was observed by the addition of the nanomaterial. Emulsions showed an attractive pink color, and when the pH was adjusted to pH 3 and pH 9, a change in color was observed, analogous to carminic acid in solution. The nanomaterial incorporation also improved chemical stability, decreasing vitamin E consumption to 9.26% of the initial value, demonstrating an important antioxidant effect of the developed nanomaterial.

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Stability of cosmetic emulsion containing different amount of hemp oil

Cited by 39 publications

References 16 publications

Stability Study of Sunscreens with Free and Encapsulated UV Filters Contained in Plastic Packaging

Stability Study of Sunscreens with Free and Encapsulated UV Filters Contained in Plastic Packaging

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Carminic Acid Linked to Silica Nanoparticles as Pigment/Antioxidant Bifunctional Excipient for Pharmaceutical Emulsions

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