How laser hair removal works

When treating hair, the energy emitted by the high power diode laser is used to prevent the regrowth of the hair. To do this, the light has to penetrate several millimeters into the skin to reach the root of the hair. When it meets the melanin in the hair (brown color), the light is absorbed, i.e. it is converted into heat. The darker, thicker and denser the hair, the more heat is produced. This heat damages the cells responsible for hair regrowth within the hair and in the immediate area around the hair. This ensures a drastic reduction in hair in the treated area.
At the same time, it must be ensured that, despite the heat produced, no blisters or scars develop. That’s why all of Asclepion’s hair removal technologies include a powerful skin-cooling element, which always cools the most superficial layer of the skin immediately before the light pulse. It also makes the treatment more comfortable for the patient.

Cutting edge light-based treatments for permanent hair reduction

The High Power Diode Lasers of the MeDioStar Family, represent state of the art technology for permanent hair reduction treatments. The wavelengths of the MeDioStar devices were chosen in such a way that the absorption of the light is very high in melanin, but low in water (important substance in the skin), therefore providing for a very selective and safe treatment, with very low risk of side effects. At the same time, this makes it possible to treat even dark skin types (up to skin type VI) with very low risk of hypopigmentation.
In addition, a special treatment mode (SmoothPulse) can be used for larger areas, which makes the laser pulse sensation almost unnoticeable, even for sensitive patients. Due to the optimum design of the MeDioStar lasers, side effects of more than slight redness and swelling around dark hair are very rare.

How many treatments will I need?

The hair alternates between periods of growth (anagen) and no growth (telogen). The transition between the two periods is characterized by an interruption in bulb cell proliferation and by a widening of the terminal part of the hair root, which is anchored to the walls of the follicle; this intermediate phase is called catagen. In humans, the phases of different hair growth are not synchronized, i.e. each hair is in a different phase of growth. During a hair removal session, all the hairs are targeted, with no way of knowing in which phase of growth they are. That means that, in a certain area, only a specific percentage of hair reacts to the laser treatment, i.e. only hairs in anagen phase. Therefore, a series of laser sessions is always necessary. How many sessions are needed varies on a case by case basis and depends upon hair and skin type as well as on genetic predisposition. Normally, six to ten sessions per area are needed in order to reach hair reduction of up to 90%.

Can all hair be treated?

Since the laser beam targets the pigments contained in the hair, all pigmented hair will react very well to treatment. Hair from very dark to dark blond can be treated effectively, while white or grey hair will not respond to the treatment. In general, the darker the hair, the better the absorption and therefore the better the results.

Is the laser procedure effective?

The effectiveness of the treatment depends on the color, thickness and depth of the hair. The outcome of the treatment also depends on the hormone levels. To reach a high level of effectiveness, it is important to set up a treatment plan with your doctor based on your skin type and hair consistency.

What kind of results should I expect?

The scientific literature shows that, 12 months following the end of treatment, the effects with latest generation lasers are very good. It can be microscopically proven that the hair follicles have definitely been damaged. Depending on genetics and hormonal changes fresh up treatments can be necessary.

What is the course of treatment?

First of all, the hair will be shaved in order to avoid the absorption of the light by the hair laying on the skin. After that, all dark spots on the skin (e.g. moles) are covered with a white pencil and a thin layer of transparent gel is applied to the skin. The handpiece of the laser is moved over the parts of the skin to be treated. The laser sends a light impulse, which creates a gentle prickling sensation. The treatment is very comfortable, thanks to the laser device’s skin-cooling system. In some special cases, it is possible to apply an anesthetic cream before treatment.

What happens after the treatment?

Following the treatment, a redness of the skin, strong sensations of warmth or wheals can occur. Overall, the side effects are similar to a light sun burn and disappear a few hours after the treatment. After a few hours, you may notice a darkening of the treated area and/or scab formation, which will vanish again after two to ten days. The hairs dissolve after between five days and two weeks, or fall out.

How much time between treatments is there?

The treatments are normally performed with an interval of four to eight weeks, when definite hair growth is noticeable.

What complications can occur?

The treatment with MeDioStar is effective and safe on all skin types. As for every other medical treatment, undesired side effects after the treatment cannot be completely excluded. Lightening of the skin or hyper-pigmentation can temporarily occur and, in very few occasions, small scars may form. A slight erythema, particularly perifollicular erythema, can develop especially for dark, thick hair. In any case, all these effects are reversible and will disappear within a few weeks. For further information about possible side effects please ask your practitioner.

Asclepion Laser Technologies is working closely with physicians, clinics and universities to improve technologies to assess their effectiveness and safety as well as to improve its application. In clinical studies, scientific questions are answered in a controlled environment. This ensures the best possible results for both the users and patients.

Monitoring study of permanent hair removal with high power diode laser MeDioStar NeXT
carried out Dirk Landwehr, MD,


Diode Laser Hair Removal: a Study with a new high power system
André Steps, Jena, Germany


810-nm Diode Laser Offers ‘Impressive’ Results
Damian McNamar, Miami Bureau Skin & Allergy News, June 2002, Volume 33, Number 6


Study of Very Long-Pulsed (100 ms) High-Powered Diode Laser for Hair Reduction on All Skin Types
Eliot F. Battle, Jr., MD; R. Rox Anderson, MD Wellman Laboratories of Photomedicine,Department of Dermatology,Harvard Medical School, Boston, MA


Effects of the 810-nm diode laser on hair and on the biophys. properties of skin.
T. Ilknur et al.: Lasers Med Sci 2010, Oct.


Epilation of 143 cases with diode laser
Yu Lin, Wang Min, Zhang Qiujie Tianjin Changzheng Hospital , China, Dermatology Department


The Effect of Different Spot Sizes on the Efficacy of Hair Removal Using a Long-Pulsed Diode Laser.
Bäumler W, Scherer K, Abels C, Neff S, Landthaler M, Szeimies RM. Dermatol Surg 2002;28:118-121


Hair Removal with Long Pulsed Diode Lasers: A Comparison Between Two Systems With Different Pulse Structures.
Fiskerstrand EJ, Svaasand LO, Nelson JS. Lasers Surg Med 2003;32:399-404


The Use of a New Diode Laser for Hair Removal.
Sadick NS, Prieto VD. Dermatol Surg 2003;29:30-34


Impressive laser hair removal with an 810 nm powerpulsed diode laser: safety and efficacy.
Nemeth AJ. EADV 2004

Professional therapy

With its extensive range of services, Asclepion sees itself as a competent partner for dermatologically and aesthetically oriented practices, institutes and clinics. Decide now for the treatment with the most advanced laser technology and discover a new world of professionalism and quality.