![]() | "Descrizione" by Carnob (1982 pt) | 2024-Oct-03 11:28 |
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Polyglyceryl-3 Beeswax è un estere composto di cera d'api e glicerolo.
Il nome definisce la struttura della molecola
Descrizione delle materie prime utilizzate nella produzione
Processo di sintesi chimica industriale passo per passo
Si presenta in forma di cera o liquido giallo.
A cosa serve e dove si usa
Cosmetica
Agente emulsionante. Le emulsioni sono termodinamicamente instabili. Gli emulsionanti hanno la proprietà di ridurre la tensione interfacciale olio/acqua o acqua/olio, migliorare la stabilità dell'emulsione e anche di influenzare direttamente stabilità, proprietà sensoriali e la tensione superficiale dei filtri solari, modulando le loro prestazioni filmometriche.
Applicazioni commerciali
Cosmetica e prodotti per la cura della pelle. Usato come emulsionante, aiuta a stabilizzare le formulazioni e a migliorare la texture dei prodotti.
Prodotti per labbra. Utilizzato in balsami per labbra e rossetti per le sue proprietà emollienti e per migliorare la durata del prodotto sulle labbra.
Prodotti per la cura dei capelli. Può essere trovato in condizionatori e trattamenti per capelli per le sue proprietà condizionanti.
Creme e lozioni. Aggiunto alle formulazioni per la sua capacità di idratare la pelle e formare una barriera protettiva.
Bibliografia__________________________________________________________________________
Fiume, Monice M., et al. Safety Assessment of Polyglyceryl Fatty Acid Esters as Used in Cosmetics. International journal of toxicology 42.2_suppl (2023): 5S-101S.
Abstract. The Expert Panel for Cosmetic Ingredient Safety (Panel) assessed the safety of 274 polyglyceryl fatty acid esters. Each of the esters in this group is a polyether comprising 2 to 20 glyceryl residues, end-capped by esterification with simple carboxylic acids, such as fatty acids. Most of these ingredients are reported to function in cosmetics as skin-conditioning agents and/or surfactants. The Panel reviewed the available data and considered conclusions from their relevant previous reports, and determined that these ingredients are safe in cosmetics in the present practices of use and concentration described in this safety assessment when formulated to be non-irritating.
Felippim, E. C., Marcato, P. D., & Maia Campos, P. M. B. G. (2020). Development of photoprotective formulations containing nanostructured lipid carriers: sun protection factor, physical-mechanical and sensorial properties. AAPS PharmSciTech, 21, 1-14.
Abstract. The effects of ultraviolet (UV) radiation emitted by the sun are cumulative and can result in chemical changes such as the generation of reactive oxygen species (ROS), leading to the regular use of sunscreen. As an alternative, the use of antioxidants, such as quercetin, into sunscreen can control these effects and provide additional skin photoprotection. However, quercetin presents low stability and poor permeation, alternatively, the encapsulation in nanoparticles can improve the stability and skin permeation. Thus, this study aimed to develop photoprotective formulations containing nanoencapsulated quercetin, characterize the physical-mechanical and sensorial properties, and evaluate the influence of nanocarriers on sun protection factor (SPF) and the immediate clinical effects. Sunscreen formulations with or without antioxidants in a free form or loaded in nanostructured lipid carriers (NLCs) were developed. After the stability, rheological behavior, texture profile, and in vivo SPF (sun protector factor) evaluation, sixty female participants, aged between 20 and 35 years, were enclosed to evaluate the sensorial properties and immediate clinical effects of the formulation in the skin hydration using biophysical and skin imaging techniques. The correlation of rheological behavior, texture profile, and sensory properties enabled the correct choice of formulation ingredients. In addition, the use of NLCs with quercetin significantly improved the SPF in vivo of the developed photoprotective formulation, without increasing the amount of UV filters. Finally, the association of NLCs in the photoprotective formulation showed synergistic effects in the SPF and an improvement in the skin barrier function and hydration.
Woodruff, J. (2018). IMPROVING STABILITY. Soap Perfumery & Cosmetics, 91(1), 34-37.
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