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In colloid science, a micellar solution consists of a dispersion of micelles (small particles) in a solvent (most usually water). Micelles are made of chemicals that are attracted to both water and oily solvents, known as amphiphiles. In a micellar solution, some amphiphiles are clumped together and some are dispersed.
An amphiphilic behavior can be observed for water and an organic solvent or between two organic solvents. Note 2: Polymeric micelles have a much lower critical micellar concentration (CMC) than soap (0.0001 to 0.001 mol/L) or surfactant micelles, but are nevertheless at equilibrium with isolated macromolecules called unimers.
The driving mechanism for micellization is the transfer of hydrocarbon chains from water into the oil-like interior. This entropic effect is called the hydrophobic effect. Compared to the increase of entropy of the surrounding water molecules, this hydrophobic interaction is relatively small. The water molecules are highly ordered around the ...
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Bioderma's cult-classic micellar water is on sale at Amazon. Get two large bottles for just $24! (Photo: Bioderma) (Bioderma)
Double cleansing usually involves applying a lipid-soluble cleanser (e.g. cleansing balm, cleansing oil, micellar cleansing water) to dry skin and massaging it around the face for a length of time, then the area may or may not be splashed with water. Any type of aqueous cleanser is then emulsified with water and used as the main cleanser that ...
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