Laser Hair Removal: Does It Hurt? How Many Sessions for Results, Safe for Thai Skin? In Phitsanulok 2026

How laser hair removal works (easy to understand in 1 minute)

I like to explain it this way — laser hair removal works by emitting light that the "pigment in the hair" absorbs, then converts into heat that travels down the hair shaft to the root, weakening the cells that produce hair. That hair then falls out and grows back more slowly, or stops growing altogether, while the surrounding skin is left unharmed.

Because the laser "targets the pigment of the hair," this is exactly why dark, well-defined hair responds well, why choosing a wavelength that suits your skin tone matters (I'll explain more below), and why it must be done in rounds — because the laser can only catch hair that is currently in its growth phase.

Does it hurt? Why a "cool" machine is more comfortable

This is the number one question I hear — "Doctor, does laser hair removal hurt a lot?" I completely understand, because many people have been put off by the pain of waxing. The good news is that today's lasers hurt far less than you'd think, especially machines with a contact cooling system.

How the cooling system helps

The laser head cools the skin down before and during each pulse (to around 5-15 degrees), which helps in two ways — it protects the upper layer of skin from overheating, and it reduces the stimulation of pain-sensing nerve endings. The result feels more like a "cool sting" than a "hot, burning pain." Research has found that cooling the skin genuinely reduces pain and lowers side effects. Most people describe the sensation as a light rubber-band flick.

Our machine: 4-wavelength diode (what many people call YAG)

I want to be straightforward about the machine, because I want you to make an informed choice — what many people commonly call a "YAG laser," de Pry's machine is actually a long-pulse diode laser with up to 4 wavelengths, paired with a cooling system.

Why is having "multiple wavelengths" a good thing? Because each wavelength suits a different skin tone and depth of hair root. Having 4 wavelengths in one machine lets me adjust and tailor it to each person's skin and hair, rather than using the same setting for everyone — this is a tangible advantage, not just marketing talk.

Thai skin, dark skin — can it be done? The story of skin tone and wavelength

Many people with darker skin worry that the laser will burn or darken their skin. I understand this concern. The answer is yes, it can be done, but you must choose a wavelength that suits your skin tone. Because darker skin has more pigment in the skin, using an unsuitable wavelength means the pigment in the skin (not the hair) may absorb the heat and cause problems.

There is research that combined multiple wavelengths on darker skin tones (Fitzpatrick IV-V, which covers most Thai skin) and found excellent hair reduction results in a very high proportion, with good safety — this is why a 4-wavelength machine suits Thai skin, because I can choose the wavelength to match your exact skin tone.

How many sessions until you see results — is it permanently smooth?

I want you to understand this honestly — laser hair removal isn't a one-and-done treatment, because the laser only catches hair in its growth phase, and at any given time only a portion of hair is growing simultaneously. So it must be done in rounds to catch every phase.

Typically it takes around 6-8 sessions, spaced 4-8 weeks apart. Many people start to see their hair thin out and grow back more slowly from the 3rd session. After the full course, research has found hair is permanently reduced by around 80-90%, and the remaining hair is usually finer and lighter in color. I prefer the phrase "permanent hair reduction" over "100% smooth forever," because some people may need occasional touch-ups — I'll tell you the truth based on your skin and hair.

Which areas can be treated — underarms, bikini, Hollywood

Laser hair removal can be done on almost any area with unwanted hair. At de Pry we treat them all, and we have in-depth articles on each area for further reading:

• Underarms — a popular spot; beyond removing the hair, it also helps the underarms look smoother (read more: Underarm laser hair removal — does it make underarms whiter?)
• Bikini / intimate area — a delicate area where cooling and gentleness matter a great deal (read more: Bikini laser hair removal — does it hurt and how to care for it)
• Hollywood (fully smooth) — for those who want to be completely smooth and confident (read more: What is Hollywood and how does it differ from bikini?)
• Other areas — arms, legs, moustache, beard, and many more spots

"Which laser is the best" — an honest answer

I hear this question often, and I want to answer it candidly — there are many types of lasers on the market, and each brand says theirs is the best. But the truth I want you to understand is that the "best laser" is the machine that suits your skin tone and hair, and is comfortable enough that you can complete the full course.

Because the real results of hair removal don't come from a model name or fancy-sounding specs, but from "completing the course" and "matching it to your skin." de Pry's machine, with its 4 wavelengths and cooling system, answers exactly this — it can be adjusted to suit many Thai skin tones, and is comfortable enough that you'll come back until you see results. I will assess and choose what truly suits you, not sell you the most expensive option.

Laser hair removal in Phitsanulok — de Pry Clinic

At de Pry Clinic, Phitsanulok, Dr. Time and the team handle hair removal with a 4-wavelength diode laser and a cooling system, starting with an assessment of your skin tone and hair every time, to choose the wavelength and settings that are most suitable, safe, and comfortable. We treat every area, including delicate areas handled with privacy and respect.

Many patients travel from Phichit, Sukhothai, Uttaradit, Kamphaeng Phet, and Phetchabun, because they want a place that assesses the skin first and treats comfortably. Come in and let me help examine your skin tone and plan a course that suits you, without having to decide that same day.

Frequently asked questions

Does laser hair removal hurt?

It hurts less than many people think, especially machines with a contact cooling system that cools the skin before and during each pulse, making it feel cool and greatly reducing pain. Most people describe it as a light rubber-band flick rather than the pain of waxing. At de Pry we use a laser with a cooling system, focusing on comfortable treatment so you feel confident enough to keep coming back until the course is complete.

How many sessions of laser hair removal until you see results?

Typically it takes around 6-8 sessions, spaced about 4-8 weeks apart, because the laser is only effective on hair in its growth phase, so it must be done in rounds. Many people start to see their hair thin out around the 3rd session, and the remaining hair is usually finer and lighter in color. I assess your skin tone and hair before planning the number of sessions.

Does laser hair removal remove hair permanently?

To put it plainly, it is "permanent hair reduction" rather than being 100% smooth forever. Research has found that after completing a full course of 6-12 sessions, hair is permanently reduced by around 80-90%. The hair that grows back is usually finer and lighter, and some people need occasional repeat sessions to maintain the results. I'll tell you honestly how much your skin and hair can expect.

Can dark skin / Thai skin have laser hair removal?

Yes, but the wavelength must be chosen to suit the skin tone. de Pry's machine is a diode laser with up to 4 wavelengths, so it can be adjusted to suit many Thai skin tones. Longer wavelengths (such as 1064 nm) are safer for darker skin, while shorter wavelengths suit lighter skin. Having multiple wavelengths therefore lets me match each person's skin more safely.

What kind of laser is de Pry's, and why do many people call it YAG?

What many people commonly call a "YAG laser" is actually, in our case, a long-pulse diode laser with 4 wavelengths, paired with a cooling system. I want you to understand this accurately so you can make an informed choice. The strengths of this machine are that it works on many skin tones, is cool and comfortable, and is suitable for treating every area of the body.

Which areas can laser hair removal treat?

It can be done on almost any area with unwanted hair. At de Pry we treat them all — underarms, arms, legs, moustache, beard, and intimate areas such as bikini and Hollywood (fully smooth). Dr. Time and the team handle treatment with privacy and respect, and delicate areas receive extra cooling and gentleness.

References

I want you to be able to check the safety and efficacy information I used to write this article yourself:

• PubMed (32054369) — research on an 810 nm diode laser with a cooling tip: effective and safe hair reduction on darker skin tones, with reduced pain through cooling: pubmed.ncbi.nlm.nih.gov
• American Academy of Dermatology (AAD) — an overview of laser hair removal from the American Academy of Dermatology: aad.org
• NHS (United Kingdom) — what you should know and how to choose a safe place for cosmetic procedures: nhs.uk