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How long does laser hair removal take & how does it work?


Laser hair removal is a technique that removes unwanted hair on the face and body. The US FDA authority describes laser hair removal as a “progressively definitive” method.

The hair removal procedure is safe and allows you to get rid of the fluff for a long time. Doctors recommend that those tired of frequently resorting to waxing, razors, and other hair removal methods should use the surgery. Certified beauty salons or doctors’ offices often perform the surgery.

The laser hair removal process is simple. The laser emits a light beam with a specific wavelength that heats the hair shaft and root.

The light beam causes a progressive thinning and thinning of the hair, enormously slowing down its regrowth and making it not visible to the naked eye.

How Long Does Laser Hair Removal Take

The laser hair removal process is simple. The laser emits a light beam with a specific wavelength that heats the hair shaft and root.

The light beam causes a progressive thinning and thinning of the hair, enormously slowing down its regrowth and making it not visible to the naked eye.

Laser Therapy is good when treating delicate areas such as the groin, armpits, mustache, and eyebrows.

Laser hair removal: how does it work?

Unlike classic hair removal techniques, which remove only the apical part of the hair, laser hair removal allows you to remove it in its entirety, including the hair bulb.

Let’s understand the working principle of laser. The laser emits a beam of waves at a frequency that selectively hits the melanin in the dark-colored hairs.

The unidirectional and monochromatic laser beam overheats and alters the vital structure of the bulb. 

The light energy that transforms into heat causes the destruction of the bulb and the cells that regenerate it. This process is called Photothermolysis. Using this process, we obtain long-lasting results. 

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In laser hair removal, therefore, the hair is not torn. After successful surgery, the skin around the follicle remains unaffected.

Advantages of Laser hair removal

Laser hair removal has several advantages.

  1. Painless: This process is completely painless
  2. Eliminates hair regrowth: It removes the hair bulb responsible for hair regrowth. After the treatment, the hair grows back slowly from 4 weeks in the beginning to several months later.
  3. Thin Hair: It promotes a reduction in the quantity and diameter of the hair. 

Laser hair removal Procedure

Laser hair removal is a treatment that can be used safely on the face, groin, armpits, arms, chest, legs, back, and other body parts.

It would help if you avoided waxing, removing hair with tweezers, or bleaching itone a month before epilation.

In the beginning, Saloon people shave the treatment area of the customer. It ensures creams, perfumes, deodorants, or other products cannot interact with the laser. Therefore, The power of the light beam directly reaches the hair bulb. 

The setting, the power of laser light, and the treatment frequency depend on the hair’s color, the diameter of the shaft, hair density), prototype, any skin lesions, and concomitant pathologies.

Before proceeding with epilation, the operator can apply an anesthetic cream to some susceptible areas of the body (face, armpits, and groin). During the surgery, it does not cause pain. There is only a slight warmth or a feeling of discomfort, similar to a needle prick. 

During the procedure, the aesthetic doctor (or qualified beautician) and the patient must wear protective eyewear to reduce ocular risk to the retina.

Depending on the area to be treated, the duration of the treatment varies from 15 minutes to 4 hours. 

 Each laser pulse acts on an area of ​​about two square centimeters. After a session, there is a decrease in hair growth between 20-35%.

Depending on the area to be treated, the duration of the treatment varies from 15 minutes to 4 hours; each pulse of the laser acts on an area of ​​about two square centimeters and it seems that after a session there is a decrease in hair growth between 20-35%.

For an effective and lasting result, it is necessary to intervene in the desired area in several sessions to reduce the hair in the active phase (anagen).

After the surgery, the remaining hair becomes a fine fuzz, which is not visible to the naked eye.

Immediately after the treatment, redness of the skin appears due to the action of the laser beam. It varies according to the degree of individual epidermal sensitivity. The redness is temporary and disappears after a few minutes.

How long does laser hair removal take

The number of sessions varies according to individual cases and the area treated with laser hair removal.
Usually, several appointments are required, established monthly or bimonthly.

Individual results depend, in fact, on a series of factors, including age, skin type, hair characteristics, and hormonal structure.

How Long Does Laser Hair Removal Take

For example, 4 to 6 sessions may be sufficient to remove unwanted facial hair with laser hair removal.
For arms, legs, and large body surfaces, approximately 5-10 treatments may be sufficient.
Specialists suggest a 4-6 weeks gap between one session and another.


To obtain long-lasting results, doctors advise you to take two sessions throughout the year.

When to take a laser hair removal session?

  • The laser hair removal sessions should be performed at least 30–40 days before sun exposure, as they can predispose to dark skin spots on the treated area.
  • If you perform it on tanned skin, hypopigmentation can occur. It can damage your skin from melanin.

It is best to undergo the treatment in the periods away from the summer or, generally, when there is the certainty of not getting a tan.

If hyperpigmented spots appear on the skin, you should seek the advice of a doctor. Creams based on hydroquinone and retinoic acid can solve the problem. On the other hand, there is no specific therapy for light spots, which tend to resolve when the tan disappears.

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Limitations of the technique

Avoiding Waxes during the procedure: Since the melanin is very concentrated in the hair bulb, the laser can only effectively treat the hair during the anagen phase. 

For this reason, between one session and another, it is good to avoid the use of waxes and other tear-off epilation techniques, which interrupt the hair growth cycle.

Laser hair removal guarantees the best results on dark-colored hair with a fair complexion. 

There is little or no hope of success for blond, white, or bleached hair. 

It is better to abandon the idea if the hair is light or the complexion is very dark. Dark skins with high phototypes (V or VI) contain large quantities of melanin. The heat tends to be absorbed by skin melanin and not hair. It results in a painful sensation during the session.

The effects of the aesthetic treatment do not last for a lifetime. So Laser hair removal does not eliminate hair permanently. 

However, the procedure has the advantage of enormously slowing down hair growth. Therefore it allows you to thin out waxes or other hair removal systems.

Hair removal with laser hair removal is not 100% total. In general, a treatment that eliminates the hair of the treated area by 80% can be considered excellent. 

To maintain the results for a long time, you should repeat maintenance sessions twice a year. 

Why does laser hair removal not work for some patients?

Just in the wake of the growing popularity of laser hair removal, some salons and many private clinics filled with replica lasers from China, Korea, and even allegedly from Germany.

The procedures on them are very cheap since the devices themselves are inexpensive. Their technical capabilities are minimal.

Therefore epilation sessions using such devices are ineffective and sometimes not safe for health.

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Laser Hair Removal Machine

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US laser industry produces the professional machine “PALOMAR VECTUS“. It has a lot of patented modern technologies and is certified according to the regulations of the Federation.


The Ministry of Health of the Federation for treating hirsutism and hypertrichosis recommends “Diode laser hair removal technology” as the “gold” standard for removing unwanted hair.


The method is always effective if the procedures are performed on PROFESSIONAL equipment by QUALIFIED specialists.

TIP: When choosing a clinic/salon for laser hair removal on the Internet and according to reviews, do not be tempted by the low cost of services and the photos shown. Do not chase meager prices for procedures – you will lose both money and time. Pay attention to which laser devices. The main selection criterion is professional equipment and competent doctors!

Contraindications and risks of Laser Hair Removal

  • Laser hair removal is unsuitable for those with little contrast between hair and complexion (light hair on light skin; medium-dark hair on a dark complexion, Etc.), given the risks of skin depigmentation.
  • The specialized aesthetic or medical staff will evaluate the possibility of carrying out the treatment. It would always be good to do a small test on a small surface to ascertain the effects of the laser on your skin type.
  • Laser hair removal is a safe technique that has no contraindications. However, if hirsutism and hypertrichosis secondary to hormonal dysfunctions are present, it is always better to ask your GP for advice or contact a dermatologist.
  • Even moles must always be evaluated before treatment, avoiding treating the skin areas in which melanocytic ones are present, as they are subject to modifications in the absorption of laser energy.
  • You should not perform laser hair therapy if you have oral therapies with high-dose corticosteroids, antibiotics, hormone replacement treatments, and immunosuppressive drugs. Other photosensitizers, such as isotretinoin, risk causing the onset of skin blemishes. 
  • Among the side effects is the erythema, destined to subside spontaneously in a few days, resulting from a laser treatment that is too energetic or unprofessional.
  • Furthermore, after the laser hair removal session, it is essential to avoid exposure to the sun. The skin is particularly vulnerable to the effects of ultraviolet radiation and can react with inflammation of the melanocytes, which will then tend to darken it.
  • For example, on the treated areas exposed to sunlight – such as the face – it is advisable to use a filter with high protection ( SPF 50), even in winter.

Reference:

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