Looking for a clinic with the latest hair removal technology and expert care? Look no further! Discover our advanced solutions for smooth, hair-free skin at Bangkok Aesthetic Clinic (BAC) , where expertise meets innovation.
“3波長技術による最新のイノベーションで安全に毛を除去します。” 最新の3波長レーザー技術を使用して、バンコク・アエステティック・クリニック（BAC）で滑らかな無毛の肌を手に入れましょう。
在寻找拥有最新脱毛技术和专家护理的诊所吗？不必再找了！来曼谷美学诊所（BAC）发现我们的先进解决方案，为您带来光滑无毛的肌肤，这里将专业与创新完美结合。
There are various methods for hair removal, but the most permanent and popular method is through the use of permanent hair removal lasers. The lasers used have the effect of destroying the hair roots to prevent new hair from growing, making the area that has been lasered smoother. Laser hair removal promotions are available both per session and as packages.
At Bangkok Aesthetic Center (BAC), the innovation in permanent hair removal laser technology utilizes a new approach that combines three types of energy waves: 755 Alexandrite laser, 1,064 YAG Laser, and 808 Diode Laser. This combination allows for the simultaneous emission of energy waves during the laser hair removal process, enhancing efficiency and safety, even for individuals with darker skin tones. It enables comprehensive hair removal across all levels of the hair follicle beneath the skin surface, ensuring smoother skin more safely than ever before. Additionally, the technology includes SHR (Super Hair Removal), which operates with a moving shot that releases coolness, minimizing pain and significantly reducing the risk of redness and inflammation. From the very first session, hair begins to shed.
Are you searching for a clinic for laser hair removal? Looking to remove underarm hair, soften facial hair, leg hair, arm hair, bikini line hair, or treat ingrown hairs while achieving smooth, polished skin effectively? Look no further than BAC Laser Center. With the three-wavelength technology laser, we can thoroughly target every level of the hair follicle, eliminating hair from the root across all hair colors and thicknesses, including fine hairs, preventing new hair growth, and effectively treating ingrown hairs. This comprehensive wavelength coverage means less pain, fewer sessions, and quicker achievement of smooth skin. Say goodbye to your hair woes and enjoy long-lasting smooth skin.
It refers to a long-pulse laser energy with a wavelength range of 755 nm, which is a wavelength that melanin pigment can absorb very well, reaching the deep dermis layer of the skin. It can absorb light more than the 808 diode by approximately 25% and the Nd:YAG (1064 nm) by about 60%, making it an effective laser for hair removal. Due to its high melanin absorption, it is suitable for skin types I-V, or those with fair to honey-toned skin and light-colored hair. However, this wavelength is not suitable for use on very dark skin (skin type V-VI) because of the high melanin content in the epidermis, which competes with the laser energy, reducing its ability to reach and destroy the hair follicles, and may cause burns. Nonetheless, studies comparing the efficacy of the 755 nm diode laser with the 755 nm alexandrite laser in individuals with skin types III-IV, who have darker skin tones, found no significant difference and confirmed their safety. Due to the shorter wavelength compared to other ranges, it can also remove hair at superficial roots, such as eyebrow hair, upper lip hair, and soft facial hair.
Diode laser 808 nm
The wavelength of diode lasers primarily falls within the range of 800–810 nanometers. This wavelength range absorbs less light than the alexandrite laser by approximately 25% (as shown in Figure 1) and, due to its longer wavelength, can penetrate deeper into the skin, potentially causing more pain than treatments with the alexandrite laser. Diode lasers are suitable for almost every skin type, absorbing more light than the 1,064 nm wavelength by about 40%, making them more effective for hair removal. However, diode lasers are best for people with light to medium skin tones and are not recommended for those with very dark or tanned skin, as there is a risk of burns. For these individuals, the Nd:YAG (1064 nm) laser should be chosen.
Studies have shown that after several treatments, hair removal effectiveness can reach approximately 30–60% for skin types I-V and up to 75–90% after 7–10 sessions, due to the medium-level depth penetration of the wavelength. It targets the tissue around the hair bulb and bulge of the hair follicle, making it an appropriate wavelength for removing hair on the arms, legs, cheeks, and mustache areas. It is not suitable for facial use or in small areas where precision is required.
Nd:YAG 1,064 nm
The Nd:YAG laser wavelength allows light to penetrate deeply under the skin but is absorbed by melanin the least when compared to other laser systems mentioned earlier. Thus, the Nd:YAG is particularly suited for individuals with dark skin as it has the lowest risk of causing burns. However, due to its ability to reach the deepest level of the hair follicles, it is ideal for removing hair that is deeply rooted, such as in the underarm and bikini areas, achieving hair removal effectiveness of about 40–80% after several treatments. Increasing the energy level improves hair removal effectiveness in individuals with light skin but does not significantly differ in those with dark skin.
In summary, using a variety of wavelengths can cover hair removal at various depths more effectively than a single wavelength. Hair removal relies on the principle of melanin in the hair follicle absorbing light energy and converting it into heat energy, which destroys the pigmented cells and thereby the hair shaft, follicle, and surrounding tissues responsible for hair production. However, as skin and hair color do not always have the dark pigmentation that can absorb light energy most effectively, the 755 Long-pulsed alexandrite laser is more suitable for removing fine, light-colored hairs in individuals with light to honey-toned skin. The 808 Diode laser is appropriate for people with light to medium skin tones, covering almost all skin colors, but is not recommended for those with very dark or tanned skin due to the risk of burns. The Nd:YAG (1064 nm) should be chosen for these individuals. Therefore, it is evident that selecting the right laser for hair removal requires considering the wavelength that effectively matches the skin color, hair color, type of hair, and the density of hair in the area to be treated, which will ensure effectiveness, safety, and reduce the treatment duration.
The working principle of lasers for hair removal involves several key factors that affect both the efficacy and safety of the treatment. These factors include:
- Wavelength of Light: The wavelength determines how deeply the laser light can penetrate into the skin. Different wavelengths target the hair follicle at various depths, with the melanin in the hair follicle absorbing the light energy. Wavelengths in the range of 600–800 nm are particularly effective at being absorbed by melanin, making them suitable for hair removal. However, for darker skin tones, which have a dense concentration of melanin in the epidermis, longer wavelengths and higher energy levels are recommended to ensure the laser light reaches the hair follicles without causing skin burns.
- Fluence (Energy): This refers to the energy level of the laser beam. Higher fluence can increase the treatment’s effectiveness, but it also raises the risk of skin damage, especially in darker skin tones.
- Pulse Duration: The duration of the laser pulse affects how the targeted tissue absorbs heat. Short pulses are typically used to destroy the hair follicle without heating the surrounding skin too much, minimizing the risk of thermal damage.
- Spot Size: The diameter of the laser beam affects the treatment’s efficiency. Larger spot sizes allow deeper penetration of the laser light and can treat larger areas more quickly, but they require more powerful lasers.
The primary target for laser hair removal is the hair follicle. The goal is to destroy the follicle to prevent future hair growth. Since the laser specifically targets chromophores (light-absorbing particles) and the hair follicle itself cannot absorb light, the destruction of the hair follicle relies on the heat transferred from the melanin that absorbs the laser light. Melanin, which is abundant in the hair, is an excellent chromophore for this purpose, especially effective within the 600–800 nm range.
However, in dark-skinned individuals, the dense melanin in the skin competes with the hair follicle melanin for the laser light, potentially reducing the effectiveness of the treatment and increasing the risk of skin burns. Therefore, longer wavelengths and higher energy levels are often used for hair removal in darker skin to ensure adequate penetration and effectiveness while minimizing the risk of burns.
Commonly used laser wavelengths for hair removal include:
- Ruby laser (694 nm)
- Alexandrite laser (755 nm)
- Diode laser (810 nm)
- Nd:YAG laser (1064 nm)
The choice of wavelength for hair removal also depends on the skin and hair color. Different wavelengths are optimized for different skin types and hair colors to maximize efficacy while minimizing the risk of side effects.
Figure 1 The melanin absorption coefficient(Hair Reduction with Lasers | Plastic Surgery Key, 2016)
Due to skin color and hair color affecting the choice of wavelength, which must be specific, it is crucial to use a comprehensive wavelength for hair removal. This directly impacts the treatment’s effectiveness and safety. It is important to choose a laser that can remove hair across all skin types and hair types. For example, the Long-pulse alexandrite laser is suitable for individuals with skin types I-V or those with relatively fair skin and light-colored hair. The Diode 808, which has a wavelength that melanin absorbs less than the alexandrite range by about 25%, can penetrate deeper under the skin, possibly causing more discomfort during treatment. Diode lasers are not recommended for use on individuals with very dark skin (skin type V-VI) as they can easily cause burns or hypopigmentation. However, the Nd:YAG (1,064 nm), which has a wavelength that can penetrate deeply into the skin while being least absorbed by melanin compared to other systems mentioned, is suitable for those with dark skin because it poses the least risk of burning. Using higher energy levels can increase hair removal in individuals with light skin, but it does not significantly enhance effectiveness in those with dark skin.
The ideal stage of hair for laser removal is during the early anagen (growth) phase.
Figure 2 illustrates the three stages of the hair growth cycle.
Since hair in different areas is at various stages, they do not all have the same lifespan, comprising three phases (Figure 2): the growth phase (anagen), the regression phase (catagen), and the resting phase (telogen). The anagen phase is when the hair grows, is nourished by blood vessels, has a bulb containing pigment cells, and is rooted and ready to produce new hair. This phase lasts about 3–8 years, with 85–90% of scalp hair in this phase. Laser hair removal should be performed during the early anagen phase because the hair bulb is at its most superficial, making it easier for the laser light to reach and affect the root. This differs from cells in the hair bulb during the telogen phase, which, despite being superficial, lack melanin pigment, reducing light absorption and making it insufficient for hair removal.
Using laser hair removal can delay hair regrowth from the heat energy altering the hair’s growth cycle into the catagen or telogen phases. The duration of hair-free periods varies by individual, but regrown hair will be finer and lighter in color.
In summary, permanent laser hair removal requires multiple sessions because hair in each area is at different stages, and laser treatment is most effective on hair in the early growth phase, which constitutes 85–90% of hair. However, after one laser hair removal session, a reduction of at least 30% in hair quantity is noticeable, with more significant reduction after 6–8 continuous treatments.
Procedure for 3-energy diode laser:
- Shave or trim the area where hair removal is desired.
- Cleanse the skin in the targeted area.
- Apply a cooling gel to reduce inflammation and irritation in the area to be lasered.
- Start the laser hair removal process, which includes a cooling system along with the laser to prevent pain or burning sensations.
- Once the area has been fully treated, wipe off the gel and clean the skin.
- Apply aloe vera gel and cream to reduce inflammation and irritation from the laser treatment.
Testimonials at Bangkok Aesthetic Center (BAC)
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Frequently Asked Questions (FAQs) about Laser Hair Removal
How many times does laser hair removal need to be performed to see results?
Since the operation of the laser specifically targets the chromophore (light-absorbing molecule), and the target tissue cannot absorb the light itself, destroying the hair follicle relies on the heat spread from the chromophore. The primary chromophore for hair removal is melanin within the hair. Therefore, for dark and thick hair, fewer sessions, approximately 3–5, are usually required to achieve hair removal. In contrast, finer hair or lighter-colored hair may require more sessions, around 6–8, and should use the Diode LASER ALEX 755 wavelength for light-colored or thin hair, such as gray, light brown, red, to be effective and worth the expense. After the first treatment, a noticeable reduction of at least 30% in hair quantity is observed, and it helps slow down hair regrowth. After treatment, some hair may remain, but regrown hair will be finer, lighter, and less in quantity. Continuous treatment gradually reduces hair, which, besides removing hair, also stimulates collagen production in the skin, helping to make the skin look smoother and brighten the skin tone.
Why does laser hair removal need to be performed frequently, and how often should it be done?
Studies have shown that performing laser hair removal every 2 weeks does not enhance treatment efficacy, but treatments spaced more than 3 months apart decrease its effectiveness. The next hair removal session should be when hair begins to regrow (anagen phase), or about 4–8 weeks after the last laser session. Specifically, facial areas should be treated every 4–6 weeks, while underarms and bikini areas should be spaced 6–8 weeks apart, and chest, back, arms, and legs should be spaced 8–10 weeks apart. On average, treatment should be done every 1–3 months for about 6–8 sessions, depending on the area treated and the amount of hair. Areas with less effective hair removal results include above the lip, chin, scalp, and back, while effective areas include underarms, face, chest, and legs.
However, the outcome of permanent hair removal depends not only on the tool’s wavelength, hair color, skin color, and depth of the hair follicle but also on the provider’s expertise to achieve satisfactory results, smooth skin, and avoid unnecessary frequent treatments due to inefficient equipment, which would be a waste of time and expense.
Preparation before laser hair removal:
When deciding to undergo laser treatment, do not pluck or wax hair 2–4 weeks prior, as this removes the laser’s chromophore targets at the hair root and hair shaft. If you plan to remove hair from areas exposed outside clothing, avoid prolonged sun exposure, and do not use skin exfoliating products or undergo skin peeling or scrubbing at least 1 week before the laser hair removal treatment.
After undergoing laser hair removal, it’s crucial to take care of your skin to prevent any potential side effects. Here’s what you should do:
- Keep your treated skin out of direct sunlight.
- Refrain from using tanning beds, sun lamps, or any other indoor tanning devices.
- Adhere strictly to the after-care instructions provided by your dermatologist.
You might experience some redness and swelling, similar to a mild sunburn, following your treatment. Applying a cool compress can help alleviate any discomfort.
Key Points to Know
- Laser hair removal cannot achieve true permanent hair removal, but rather permanent hair reduction. This is because it cannot destroy the hair follicle’s stem cells. The US Food and Drug Administration (FDA) defines permanent hair reduction as a treatment that can remove hair over several growth cycles, which on average lasts 6–12 months, depending on the body area.
- Individuals with darker skin should opt for treatments using longer wavelength lasers to minimize side effects, available at BAC Clinic.
- Those with light skin and dark hair achieve the best results.
- A meta-analysis study by Sadighha in 2009, assessing the effectiveness of four laser systems — ruby, alexandrite, diode, and Nd:YAG — found that the Nd:YAG laser is less effective than the other systems.
These points emphasize the importance of understanding the limitations and expectations of laser hair removal treatments, including the influence of skin and hair color on outcomes and the necessity of choosing the right type of laser for individual skin types to minimize risks and maximize results.
Reference
Hair Reduction with Lasers | Plastic Surgery Key. (n.d.). Retrieved September 24, 2021, from https://plasticsurgerykey.com/hair-reduction-with-lasers/?fbclid=IwAR34t614NbAj_4riZOiTb1FsIRWrBXTW8oROMTWBnPunCVwTewBwSqy4APQ
Sadighha, A. (2009). Meta-analysis of hair removal laser trials. Lasers in Medical Science, 24(1), 21–25.
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Contact Information and Location
BAC Clinic has been established with the aim of integrating top-tier treatment options with patient-centric healthcare that delivers value for your investment of time and money. Our proficient team is prepared to elevate the standards of medical tourism.
Clinic License Number : 10101010961
Opening Hours
Tuesday — Friday: 11:00 AM — 8:00 PM
Saturday-Sunday: 11:00 AM — 7:00 PM
Monday: Closed
Find us conveniently located in the vibrant district of Khlong Toei, right in the heart of Bangkok’s Sukhumvit 16 area. We are easily accessible by public transportation, with ample parking available for those who prefer to drive.
To determine whether you are a suitable candidate, Call us now (+66)2 0033365 or