Preparation and Thermal Properties of Fatty Alcohol/Surfactant/Oil/Water Nanoemulsions and Their Cosmetic Applications

Okamoto, Toru; Tomomasa, Satoshi; Nakajima, Hideo

doi:10.5650/jos.ess15183

Cited by 23 publications

(14 citation statements)

References 15 publications

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“…It is presently used as the dispersed phase for Vit C, allowing its dissolution and stabilization. A specific structure known as -gel is of particular interest in cosmetic skin care because of its soft touch [Okamoto et al, 2016;Datta et al, 2020]. Its basic ingredients are a fatty alcohol, namely cetyl and stearyl alcohols and their mixtures, and a surfactant that self-assembles as bilayers in association with the fatty alcohols.…”

Section: Introductionmentioning

confidence: 99%

Stabilization of vitamin C in emulsions of liquid crystalline structures

Caritá

Azevedo

Buri

et al. 2021

International Journal of Pharmaceutics

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: Introductionmentioning

confidence: 99%

Stabilization of vitamin C in emulsions of liquid crystalline structures

Caritá

Azevedo

Buri

et al. 2021

International Journal of Pharmaceutics

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“…Continuous moisture retention lasting at least 6 h was observed (Orita et al, 2012). Using behenyl, stearyl and cetyl alcohols and hexadecyl sulfate and sodium stearoyl glutamate as anionic surfactants, Okamoto et al (2016) developed a series of nanoemulsions containing α‐gel structure. A shampoo formulation containing an α‐gel network is reported to deliver fatty alcohol penetration into hair while maintaining shampoo performance.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Alpha Gel Formed by Fatty Alcohol and Amino Acid Surfactants

Ren¹,

Tang²,

Chen³

2021

J Surfact & Detergents

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α‐Gel, as a specific lamellar liquid crystal structure, presents unique parameters and attracts broad interest. However, conventional formation of α‐gel involves surfactants that have a long alkyl chain (more than 14 carbons), resulted in limited application into personal care products due to their low Krafft temperature. In this study, a simple way to generate α‐gel was developed using sodium lauroyl sarcosinate, an amino‐acid‐based surfactant containing an alkyl chain with less than 12 carbons. The desired structure was analyzed and discussed. The method, when extended to other amino acid‐based surfactants, gave positive results.

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“…There are two main ways to obtain fine nanoemulsions. One is emulsification with high pressure homogenizers, consisting of a high-pressure pump and a homogenizing nozzle 12 . The pump is used to compress the crude emulsion to the required pressure.…”

Section: Introductionmentioning

confidence: 99%

The Complex Value Brought to Skincare Products by a Novel Silicone Emulsifier

Uyama

Ando

Hatakeyama

2020

Jouranal of Society Cosmetic Chemists Japan

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In the past, skincare products have only focused on the function of caring for the skin. In practical use, however, base makeup products such as foundations are applied on dried cosmetic films of skincare products. Generally speaking, in order to obtain a natural finish, the foundations should be applied evenly. Hence, we aimed to develop new formulations of skincare products which have excellent compatibility with makeup foundations. Silicone surfactants provide a lower surface tension than hydrocarbon surfactants. Due to this low surface tension, excellent spreading capacity and skin compatibility are thought to be obtainable. We reported a novel silicone surfactant, 3-10-carboxydecyl-1,1,1,3,5,5,5-heptamethyl trisiloxane CDTS and found an α-form hydrated crystalline phase often referred to as α-gel, especially in the cosmetics field , composed of CDTS, polyoxyethylene 5 mol glyceryl monostearate GMS-5 , fatty alcohol, and water. In this study, we first investigated the fundamental physical properties of CDTS. The water solubility of CDTS is quite low ca. 17 μmol／L and its approximate pK a is 5.7 at 20 ºC. Titration curves also indicated that CDTS is a weak acid. We observed a microemulsion ME phase containing CDTS, GMS-5, fatty alcohol, dimethicone, and hydrogenated polydecene. A novel fine nanoemulsion, whose diameter was less than 100 nm, was obtained by the dilution of the microemulsion phase with the water phase. The obtained fine emulsion was applied for tribology tests. Tribological characteristics indicated that the fine emulsion containing the CDTS α-form hydrated crystal is superior to conventional fine emulsions composed of polyoxyethylene 60 mol hydrogenated castor oil, from the viewpoint of low friction at application. Moreover, powder foundation could be applied evenly on the dried cosmetic film of fine emulsions containing CDTS.

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Preparation and Thermal Properties of Fatty Alcohol/Surfactant/Oil/Water Nanoemulsions and Their Cosmetic Applications

Cited by 23 publications

References 15 publications

Stabilization of vitamin C in emulsions of liquid crystalline structures

Stabilization of vitamin C in emulsions of liquid crystalline structures

Preparation and Characterization of Alpha Gel Formed by Fatty Alcohol and Amino Acid Surfactants

The Complex Value Brought to Skincare Products by a Novel Silicone Emulsifier

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