Tag: hyperpigmentation

The History of Laser Hair Removal

The lasers used for laser hair removal developed from a theory instituted by the Nobel prize-winning physicists Albert Einstein and Max Planck. This theory, first introduced in the 1920s, defined stimulated emission, or laser. The word laser is an acronym for light amplification by stimulated emission of radiation. However, it wasn’t until the 1960s that the first true laser was built and patented by Gordon Gould, an American physicist.

Laser hair removal devices of the 1960s sent out a continuous wavelength which caused damage to the surrounding skin tissue. In the late 1960s, Dr. Leon Goldman was the first to begin testing a ruby laser for hair removal. It was also in this time frame that the Q switch with developed for use with a laser. With the development of the Q switch it was possible to control the energy of the laser beam to be sent to out in controlled pulses. The Q switch worked much in the same way as a camera shutter.

Early devices for laser hair removal proved to be ineffective. In order to remove the hair follicle, there was severe damage to the surrounding skin area. The ruby laser, as well as the argon laser, are no longer used for laser hair removal.

Throughout the next several decades, researchers and physicists continued to experiment and test lasers for successful hair removal. It wasn’t until the 1980s that the first laser was introduced as a safe and effective method of hair removal. This discovery actually happened by chance when scientists noted that birthmarks treated with certain types of lasers caused the hair in that area to disappear and not grow back.

The FDA cleared the first laser for hair removal in 1995 . This laser, called the Soft Light, was a NeoDymium Yttrium Aluminum Garnets laser and was manufactured by Thermolaise. This laser was used with a chromophore of carbon-based lotion. After the skin was waxed, the carbon-based lotion would be rubbed onto the skin and enter the hair follicle. The beam of light produced by the laser would heat the carbon quickly and destroy the hair follicle. However, this type of laser treatment could easily damage nearby skin cells. Eventually, this type of laser hair removal proved to be less effective than targeting the natural pigmentation that existed in the skin.

In 1997, several types of laser hair removal devices were cleared by the F DA. One of these was the ruby laser, which used a shorter wavelength system. However, clinical research eventually showed that the laser did not produce damage far enough down the hair shaft to result in permanent hair loss. Researchers also found that if a t the ruby laser was used on people with dark or tan skin there was a high risk of hyperpigmentation. Other types of laser hair removal devices today include alexandrite, diode, and NeoDymium Yttrium Aluminum Garnets lasers.

Research and development in the area of laser hair removal are still in the early stages. However, continuing research, testing and development in this area continues to produce safer and more effective equipment.

Side Effects of Laser Hair Removal

Laser hair removal is considered a medical treatment, and just like all other medical treatments, it carries the risk of possible side effects. The chance of developing one or more of the existing side effects partially depend on your skin characteristics. The side effects of laser hair removal can be temporary or permanent.

The possibility of developing a temporary side effect is much higher than developing a permanent one after laser hair removal. A temporary side effect can last anywhere from a day to several months before it goes away completely. The temporary side effects that can be experienced after laser hair removals include pain, blistering, swelling, redness, irritation, and hyperpigmentation.

Some people describe the discomfort they feel during and after their laser hair removal treatment as a feeling of pain. This feeling exists, both during the procedure, and after it is finished. During the treatment process, the feeling of discomfort can be lessened by the use of a local anesthetic. For the days following the procedure, the pain can be alleviated through the use of over-the-counter or prescribed pain medication.

Swelling typically occurs at, or near, the area that was treated for hair removal. Topical treatments, such as creams or ointments, generally relieve the swelling. This side effect may or may not be particularly bothersome, depending upon the area that was treated with laser hair removal.

If redness develops as a side effect of laser hair removal, it can be treated with a topical cream or ointment. This side effect usually resembles a mild sunburn.

Blistering can be a very painful, embarrassing, and noticeable side effect of laser treatment. Some people do not feel comfortable being seen if they have blisters. If you are one of these people, it is best to schedule your laser hair removal treatments at a time when it will minimize your exposure to other people.

A temporary darkening of the skin of the treated area is called hyperpigmentation. Generally, this temporary side affect of laser hair removal will disappear on its own. Often, the area affected by hyperpigmentation can be covered with makeup.

In addition to the temporary side effects, there is also the possibility of permanent or long-term skin damage. If you’ve made the decision to have laser hair removal, you must be prepared to accept these risks. Permanent side effects include skin discoloration, scarring, and burns.

If skin discoloration does occur, it is generally a permanent lightning of the skin in the area that was treated. The wavelengths of the laser beam are made to attack the dark pigmentation in the hair follicle. Sometimes dark colored skin can also be affected. This side effect can be emotionally damaging, although it is not painful.

Scarring, mostly occurs by experiencing accidental over treatment or by being treated by someone with minimal training. It is very important to make sure that your laser hair removal treatments are being done by a qualified, experienced professional technician.

Burns are a very rare occurrence, and they usually are caused by an inexperienced, less qualified technician.

The risks and side effects associated with laser hair removal can be minimized by making sure that the treatments are done by a qualified professional. It is also important to tell your practitioner of any hormonal or family conditions that may affect your treatment. Tanning and unprotected exposure to the sun should be avoided for several weeks before treatment.

Necessary Care after Laser Hair Removal

Laser hair removal, although a simple process, does require proper care of the skin in the area that was treated. Generally there is little recovery time needed regarding laser hair removal procedures. People can usually return to normal activities immediately after treatment. However, it is important to take the time to follow the recommended guidelines for aftercare in order to protect against any chance of a complication and to reduce any discomfort that may be experienced.

Following laser hair removal treatment, it is not uncommon for the skin to be slightly swollen and red in the treated area. Some people describe it as feeling like a mild sunburn, with slight puffiness and irritation. Placing a cooling preparation such as a cold compress, cold pack, or aloe vera, on the affected area will ease the temporary mild burning sensation. Some people experience this burning sensation for only a few hours, while others may feel it for a day or two. This is the time it takes for the skin to return completely to its normal state.

It is important to apply a total sunblock to the area that was treated with laser hair removal if it is going to be exposed to sunlight. A sunblock with an SFP of 30 or higher should be applied. Irritation and a burning sensation of the treated areas can result from even the slightest exposure to the sun. Sunlight should be avoided for three weeks following laser hair removal. This will prevent hyperpigmentation from occurring.

Moisturizing creams can also have a beneficial effect on the treated areas and help to prevent tissue crusting or scabbing. These creams can be bought over the counter or be prescribed by your practitioner. It usually is not necessary to use antibacterial cream. In fact, antibacterial creams might cause drying of the skin in the area that was treated with laser hair removal. Healthy skin is important for successful laser treatments and moisturizing every day will help to keep your skin that way.

As long as the skin is not broken, it is safe to apply makeup to the areas of the skin that have undergone laser hair removal treatments. The makeup used should be new and applied with clean fingers or a new clean sponge. Make of also helps to act as an additional sunblock.

Following a laser hair removal treatment, it is best to take warm, quick showers. It is best to use a gentle cleanser and avoid harsh soaps that may dry the skin. If any area of the body other than the face as has been treated, hot baths should be avoided for a couple of days.
The area of treatment should not be shaved for four or five days. After that time, it is okay to begin shaving again. Tweezing, waxing, plucking, and bleaching should not be done at all during, or in between, laser hair removal treatments.

If any blistering occurs, immediately apply a topical antibiotic cream or ointment and cover it with a non-adhering dressing. Immediately notify the laser technician or your physician.

After a few days, you will usually notice the hair that was treated by laser hair removal begins to shed. This should be expected and is a normal part of the treatment and recovery.

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.