Basic Laser Hair Removal Terminology

Basic Laser Hair Removal Terminology
It is​ important to​ understand the​ basic terminology used in​ laser hair removal techniques .​
This gives you​ a​ better understanding of​ what the​ procedure entails .​
It also helps to​ put many people at​ ease to​ completely understand the​ words used in​ the​ treatment.
Absorption is​ the​ uptake of​ one substance into another.
Active medium is​ the​ part of​ the​ laser that absorbs and stores energy.
American bikini wax,​ is​ a​ standard bikini wax in​ which hair is​ removed from either side of​ the​ panty line at​ the​ top of​ the​ thigh.
Anagen is​ the​ growth phase in​ the​ hair cycle in​ which a​ new hair is​ synthesized.
Brazilian bikini wax,​ is​ a​ bikini wax in​ which all of​ the​ hair is​ removed in​ the​ pubic region,​ including the​ hair on​ the​ buttocks and labia.
Catagen is​ a​ transitional stage of​ a​ hair's growth cycle,​ occurring between the​ growth and resting stages.
Chromophore is​ a​ group of​ atoms in​ a​ molecule that produces color through selective light absorption.
Coherent light are light waves that travel in​ parallel,​ and in​ the​ same direction.
Dermal scattering is​ the​ change that occurs between the​ laser's spot size at​ the​ surface of​ the​ skin and the​ spot size deeper in​ the​ tissue.
Dermis is​ the​ underlying or​ inner layer of​ the​ skin.
Electrons are stable,​ negatively charged elementary particles that orbit the​ nucleus of​ an​ atom .​

Energy source is​ the​ device in​ the​ laser that supplies energy to​ the​ active medium.
Epidermis is​ the​ thin outermost layer of​ the​ skin.
Excited states is​ the​ conditions of​ a​ physical system in​ which the​ energy level is​ higher than the​ lowest possible level.
Fissure is​ a​ crack or​ cut in​ the​ skin.
French bikini wax,​ is​ a​ bikini wax in​ which all of​ the​ hair is​ removed from the​ pubic region except for​ a​ stripe of​ hair on​ the​ pubis.
Hair follicle bulb is​ the​ bulbous base of​ the​ hair follicle that houses the​ dermal papilla.
Keloids scars are raised areas of​ fibrous tissue.

Melanin are grains of​ pigment that give hair and skin its color.
Monochromatic light is​ of​ one wavelength,​ and therefore appears as​ one color.
Nanometers are each one billionth of​ a​ meter.
Optical cavity is​ a​ part of​ the​ laser that contains the​ active medium.
Polychromatic light consists of​ light of​ multiple wavelengths,​ appearing as​ different colors.
Pulse duration is​ the​ duration of​ an​ individual pulse of​ laser light,​ which is​ usually measured in​ milli-seconds.
Selective photothermolysis is​ the​ selective targeting of​ an​ area using a​ specific wavelength to​ absorb light into that target area sufficient to​ damage the​ tissue of​ the​ target while allowing the​ surrounding area to​ remain relatively untouched.
Spontaneous emission is​ the​ process or​ an​ excited atom,​ after holding extra energy for​ a​ fraction of​ a​ second,​ releases its energy as​ another photon then falls back to​ its grounded state.
Spot size is​ the​ width of​ a​ laser beam.
Terminal hair is​ hair found on​ the​ scalp arms legs Alexa lay in​ pubic areas.
Vellus hair is​ generally fine,​ non-pigmented hair found on​ the​ face that is​ often called peach fuzz.

Wavelength is​ the​ distance between two consecutive peaks or​ troughs in​ a​ wave.

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