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The preparation of visible emulsions and its applications to cosmetics
Author(s) -
Okamoto Tohru,
Matsushita Yuji,
Matsuura Eiko,
Masuda Masaru
Publication year - 2006
Publication title -
international journal of cosmetic science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 62
eISSN - 1468-2494
pISSN - 0142-5463
DOI - 10.1111/j.1467-2494.2006.00310_4.x
Subject(s) - emulsion , cosmetics , amphiphile , coalescence (physics) , chemical engineering , chemistry , particle size , rubbing , particle (ecology) , oil droplet , materials science , chromatography , nanotechnology , organic chemistry , physics , polymer , copolymer , oceanography , astrobiology , engineering , geology
We developed a preparation method for visible emulsion droplets (0.05–3 mm) consisting of a solid type oil and a liquid type oil. It was found that (1) using amphiphiles as the solid oil gave a spherical and visible sized particle and (2) behenyl alcohol was the most preferable amphiphile to make a large sized particle. DSC measurement and microscopic observation of the particle showed that the amphiphilic solid oil built a shell on the outer side of the particle and the shell protected the emulsion against aggregation and coalescence. It was found that the preparation of an extremely large emulsion could create innovative functions in the cosmetic field. The visible sized emulsion could provide a freshening feel in the early stages of the application and an emollient feel after rubbing into the skin. Furthermore, since this emulsion could protect an unstable lipophilic material from hydrolysis, it offers a suitable storage for useful cosmetic ingredients such as lipophilic drugs and hydrophobic powders.