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Intense pulsed light (IPL) is a technology used by cosmetic and medical practitioners to perform various skin treatments for aesthetic and therapeutic purposes, including hair removal, photorejuvenation (e.g. the treatment of skin pigmentation, sun damage, and thread veins) as well as to alleviate dermatologic diseases such as acne.
A physician performing laser resurfacing using an erbium laser. Laser resurfacing is a laser surgery technique that disassociates molecular bonds. It is used for the treatment of wrinkles, solar lentigenes, sun damage, scarring (acne scars and surgical scars), stretch marks, actinic keratosis, and telangiectasias.
During my visit, I also got a chance to try out an IPL treatment using Lumenis' M22 laser machine for myself. A week before my visit, I was given strict instructions to prep my skin for the treatment.
Light is absorbed by dark objects but reflected by light objects and water, so laser energy can be absorbed by dark material in the hair or skin, with much more speed and intensity than just the skin without any dark adult hair or melanin. Melanin is considered the primary chromophore for all hair removal lasers currently on the market. Melanin ...
The time duration (pulse duration) of the laser energy must be very short, so that the tattoo pigment is heated to fragmentation temperature before its heat can dissipate to the surrounding skin. Otherwise, heating of the surrounding tissue can cause burns or scars. For laser tattoo removal, this duration should be on the order of nanoseconds.
These cells produce melanin, which are pigments that cause light or dark brown spots in gums and oral mucosa. The most common cause is genetic factors or tobacco smoking, Smoker's melanosis. [ 2 ] If the melanin pigmentation is found in a person smoking cigarettes, the most effective way to get rid of the pigmentation is to stop smoking.
Alopecia areata (AA), also known as spot baldness, is a condition in which hair is lost from some or all areas of the body. [ 12 ] [ 1 ] It often results in a few bald spots on the scalp, each about the size of a coin. [ 7 ]
The laser light sources used in APLI have power densities which allow multiphoton ionization via stable electronic states of the molecule or atom. The required power density has to be sufficiently high, so that in the lifetime of the first reached electronic state, which is in the range of a few nanoseconds, a second photon can be absorbed with ...