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Cosmetology (from Greek κοσμητικός, kosmētikos, "beautifying"; [1] and -λογία, -logia) is the study and application of beauty treatment.Branches of specialty include hairstyling, skin care, cosmetics, manicures/pedicures, non-permanent hair removal such as waxing and sugaring, and permanent hair removal processes such as electrology and intense pulsed light (IPL).
Skin care is a routine daily procedure in many settings, such as skin that is either too dry or too moist, and prevention of dermatitis and prevention of skin injuries. [ 3 ] Skin care is a part of the treatment of wound healing , radiation therapy and some medications.
Topical cream formulation is an emulsion semisolid dosage form that is used for skin external application. Most of the topical cream formulations contain more than 20 per cent of water and volatiles and/or less than 50 per cent of hydrocarbons , waxes , or polyethylene glycols as the vehicle for external skin application. [ 1 ]
The personal skin care market based on natural products has shown strong growth. [7] Clinical and laboratory studies have identified activities in many natural ingredients that have potential beneficial activities for personal skin care, [ 2 ] [ 3 ] but there is a shortage of convincing evidence for natural product efficacy in medical problems.
Cleansing is a standard step in skin care routines. Skin cleansing includes some or all of these steps or cosmetics: Cleansers or foaming washes are used to remove excess dirt, oil, and makeup left on the skin. [24] Different cleansing products are aimed at various types of skin, such as sulfate-free cleansers and spin brushes. [24]
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Hyaluronic acid is a common ingredient in skin care products. Hyaluronic acid is used as a dermal filler in cosmetic surgery. [29] It is typically injected using either a classic sharp hypodermic needle or a micro-cannula. Some studies have suggested that the use of micro-cannulas can significantly reduce vessel embolisms during injections.
In addition to having the largest classes spring up, 63 graduates served in the Union army. The first course of a three-year program leading to a degree in civil engineering was established in 1865, the same year MIT was founded. By 1869, the Crane Theological School was organized. [20]