Laser or light energy is selectively absorbed by the melanin in hair follicles and converted to heat, diffusing to and injuring stem cells in the bulb and bulge. Effective hair reduction can only be achieved during the active growth phase and hair reduction is considered permanent when a significant amount of hair does not return for a period of time longer than the complete growth cycle. After a series of treatments, most hair is permanently removed. However, if hair does regrow it will be finer and lighter than before
The word acne comes from the word acme meaning "the highest point", which comes from the Greek akme meaning "point" or "spot" - it was originally misspell, with an 'n' rather than an 'm' in 1835.
Stretch marks or striae (singular stria), as they are called in dermatology, are a form of scarring on the skin with an off-color hue. They are caused by tearing of the dermis, and over time can diminish but not disappear completely.
Tattoo is made by inserting indelible ink into the dermis layer of the skin to change the pigment. Tattoos on humans are a type of body modification, and tattoos on other animals are most commonly used for identification purposes.
Keloid is a type of scar which, depending on its maturity, is composed mainly of either type III (early) or type I (late) collagen. It is a result of an overgrowth of granulation tissue (collagen type 3) at the site of a healed skin injury which is then slowly replaced by collagen type 1. Keloids are firm, rubbery lesions or shiny, fibrous nodules, and can vary from pink to flesh-coloured or red to dark brown in colour. A keloid scar is benign, non-contagious, but sometimes accompanied by severe itchiness and pain and changes in texture. In severe cases, it can affect movement of skin.
It is an autoimmune disease that appears on the skin. It occurs when the immune system mistakes the skin cells as a pathogen, and sends out faulty signals that speed up the growth cycle of skin cells. Psoriasis is not contagious. However, psoriasis has been linked to an increased risk of stroke. There are five types of psoriasis: plaque, guttate, inverse, pustular and erythrodermic. The most common form, plaque psoriasis, is commonly seen as red and white hues of scaly patches appearing on the top first layer of the epidermis (skin). Some patients, though, have no dermatological symptoms.
Vitiligo is a condition that causes depigmentation of sections of skin. It occurs when melanocytes, the cells responsible for skin pigmentation, die or are unable to function. The cause of vitiligo is unknown, but research suggests that it may arise from autoimmune, genetic, oxidative stress, neural, or viral causes. The incidence worldwide is less than 1%.The most common form is non-segmental vitiligo, which tends to appear in symmetric patches, sometimes over large areas of the body.
Eczema (means ‘to boil over') is a form of dermatitis, or inflammation of the epidermis (the outer layer of the skin). In England, an estimated 5.7 million or about one in every nine people have been diagnosed with the disease by a clinician at some point in their lives.
Dandruff, also known as scurf or Pityriasis simplex capillitii, affects the scalp and causes flakes of skin to appear - it is a common condition. Our skin cells are forever renewing themselves. When the skin cells on our scalp are renewed the old ones are pushed to the surface and out of the scalp. For a person with dandruff the renewal is faster, meaning more dead skin is shed, making the dandruff more noticeable. Dandruff can also occur if the scalp is frequently exposed to extreme temperatures.
Melasma/Hyper pigmentation-Melasma (also known as "Chloasma faciei"or the mask of pregnancy when present in pregnant women) is a tan or dark skin discoloration. Although it can affect anyone, melasma is particularly common in women, especially pregnant women and those who are taking oral or patch contraceptives or hormone replacement therapy (HRT) medications. It is also prevalent in men and women of Native American descent (on the forearms) and in men and women of German/Russian and Jewish descent (on the face).
Dark undereye circles occur because capillaries and blood vessels around the eyes break down. The same internal mechanisms that cause bruises are responsible for dark circles. Study Research says that dark undereye circles occur because of iron deficiency, aging, exhaustion, smoking, illness, hyper pigmentation, dramatic weight loss, and heredity. Dark circles make people look tired, unhealthy and older, and many people seek cosmetic procedures to correct this condition. Many people seek laser treatment for dark undereye circles to give them a fresh, youthful look.