Tag: Keloids

How Laser Hair Removal Works on Different Skin Types and

How Laser Hair Removal Works on Different Skin Types and Hair Color

The effectiveness of laser hair removal is dependent upon several factors including skin type and hair color. Lesser factors include the condition of the skin, sun exposure, and the cycle of the hair.

There are four basic skin types – Caucasian European, African descent, Eastern Asian, and Middle Eastern / Mediterranean. Each of these four skin types have several things in common, such as the thickness of the dermis and epidermis, the number of hair follicles, and the skin’s layered components. However, there are many characteristics of each skin type that are very different.

Caucasian Europeans have the most varied skin type of all the groups. This group has light skin with great variation in skin color amongst the people which is determined by heredity. The people from this group are the best candidates for laser hair removal. Generally, they will need fewer treatments and attain the best results. Overall, the effectiveness of laser hair removal on individuals from this group is dependent upon a combination of their hair and skin color.

Individuals of African descent, with dark brown skin or poor candidates for laser hair removal. This is because the laser light is absorbed into the skin pigment, causing possible burns, scars, and keloids. The dark skin causes the laser beam to b drawn away from its target area.

People in Eastern Asian descent, which includes China, Japan and Korea, generally have the least amount of facial and body hair. They are usually good candidates for laser hair removal because their hair is dark, and they have minimal skin pigmentation.

Middle Eastern and Mediterranean people tend to have the most facial and body hair. Their skin color can very from dark white to medium brown. Those people with lighter skin generally make better candidates for laser hair removal. Skin bleaching agents, such as 4% hydroquinone, are sometimes used by people in this group to lighten the skin as much as possible. This is done to make the laser treatment as effective as possible and reduce the risk of burning the skin. This ethnic group has an increased risk of hyperpigmentation.

Hair color combines with skin type to further determine the effects of laser hair removal. Black or dark brown hair is usually coarser and contains the most pigmentation. These factors make it the easiest to treat because the laser light is most easily absorbed by the dark pigmentation. Lighter brown hair usually requires more treatments than darker hair. The lighter the hair color, the more difficult laser hair removal becomes. Red and light blonde hair contain phemelianin pigment which makes light absorption very difficult. Grey or white hair does not contain any pigmentation at all, therefor, they cannot absorb light. The Fitzpatrick Skin Phototype Scale and the Lancer Ethnicity Scale are used by professional technicians to determine the effectiveness of laser hair removal based on skin type and hair color.

The best combination of skin type and hair color for laser hair removal is light skin with dark hair. These people will have the best results with the least treatments.

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.

Acne Scarring 101

When acne heals or when treated by a dermatologist, there are some instances when it will leave some scarring on skin. This is especially true with acne that appears on the later stages of life. Adult skin does not have a store of collagen that helps the skin heal and regenerate. Scarring may also occur when the acne is quite severe. This is because the problem is more intensive, cutting through the skin with more depth than what is usually seen with acne that are only on the surface.

A scar may initially appear as reddish in appearance. After a white, when the skin heals and try to regenerate, the scar will become lighter, sometimes turning white, several shades lighter than the skin tone. There may be pain sometimes, even irritation. Itching is of course not uncommon because as the skin heals, the wound dries up. Sometimes, there may also be some inflammation, swelling and redness.

Normally, only nodules and cystic acne types result in scarring. However, there are people who are more prone to scarring than others. With these people, even the common lesions may result in scarring if not treated well. This is why it is important that people have their acne treated even at the initial stages to prevent scarring and permanent damage to the skin.

Basically, there are two kinds of acne. One kind is the one caused by the increase in tissue formation while the other is caused by the loss of tissue on the skin. The former is what people call keloids, which does not look like your usual scar. Keloids are bumps of skin that resemble a pimple, forming even after the wound has already healed. It can even form on the surrounding healthy tissue. Keloid scarring is actually quite rare and only affects people who have family history of it.

Hypertrophic scars, on the other hand, form above the skin level and appear as bulges and bumps on the skin. Because of this, some people do not think of it as scars but rather pimples that have not yet healed.

The more usual scars are the deep and shallow kind that resembles small crevices on the skin. These are called the Atrophic scars, which are formed below the skin level. There are several types of these kind of scar depending on the shape that it forms on the skin. The ice pick scars, which is the most common, is characterized by deep pits that form v-shapes on the skin. Another form is the boxed scars that are usually seen on temple and cheeks. They are angularly shaped, almost similar to the ones gotten in chicken pox. They can be either superficial or deep depending on the severity of the acne condition. The rolling scar, on the other hand, is the kind that gives the skin a wave-like appearance.

Scarring can actually be treated depending on the severity of the scarring problem, your skin type and of course the type of scars that you have. Sometimes, the location of the scars will also affect the treatment. Often, scarring at the back and at the chest are more difficult to treat compared to those found on the face.

There are a lot of treatment procedures available for scarring such as corticosteroid injections and cryosurgery. Surgical procedures may also be done to remove the scarring as well as x-ray therapy.

Getting Rid Of Acne Scars

Whenever body suffers any injury, the body rushes its soldiers to protect itself. Acne infection is also an injury that needs repair and body sends white blood cells and other molecules that fight the infection and repair the infected site. After the repairing job is completed, a scar forms that is the sign of repair. Skin never becomes as smooth as it was before the acne. Some scar is always left. Let us find out more about acne scars and how doctors can repair them so that you get something similar to your earlier look again.

Types Of acne scars- before we discuss about the type of scars, let us also note that everyone has different tendency of scar formation. Some people develop very less scars, while others may have major scars for the same type of acne. Acne scars are of two types- scars that are caused by loss of tissue and scars caused by increased tissue formation.

Depressed Scars- these scars may be of different types such as Ice-pick scars, depressed fibrotic scars, soft scars and macular types. As the cyst expands with pus, bacteria, oil and dead skin cells it ruptures and attacks the dermis. to protect the dermis the white blood cells rush in. This rupture may cause loss of collagen giving rise to deep recess or depression. The skin above is left unsupported because of loss of tissue below it and a saucer shaped or jagged ice pick scar is formed. Ice pick scars are more common on face.

Keloids- In some people the scar forms in a reverse fashion. With the loss of collagen, body triggers fibroblasts that produce excessive collagen producing scar tissues called keloids. Keloids are more commonly found on male torsos. Other type of increased tissue formation scar is called hypertrophic scar. Hypertrophy means overgrowth.

Scar Treatment- scars can be treated by your dermatologist using different treatments. Before proceeding for scar treatment, you have to discuss your feelings about the scars with your doctor. The cost involved may also play a role in choosing the treatment. What results you desire is the third factor. The severity of the scar, the location and type of treatments that can be done are other factors that have to be used to treat acne scars.

The common treatments for acne scars are- collagen treatment, laser treatment, dremabrasion, microdermabrasion, skin surgery, skin grafting etc. Keloids may be left untreated if it is felt that treatment will form further keloids. Injecting with steroid injections may also treat keloids.

This article is only for informative purposes. This article is not intended to be a medical advise and it is not a substitute for professional medical advice. Please consult your doctor for your medical concerns. Please follow any tip given in this article only after consulting your doctor. The author is not liable for any outcome or damage resulting from information obtained from this article.