南国の美容クリニック

Laser hair removal technology,
as with the other cosmetic procedures
is evolving through the years.
For this reason, various machines come out year after year
which make everyone confused to determine
what is the best
of them all.

Even every expert has different opinion
which is also caused by the diversity of the devices.

However, which certain laser treats
certain state or area better
is now, to a certain extent
becoming clearer.

Listed below is the main various laser types（by wavelength〉
and their main advantages and disadvantages respectively
in their effective order：

1.Alexandrite Laser(755nm)
　　　　　pro：each treatment shows good effect
　　　　　con：cannot reach deeper hair root
2.YAG Laser(1064nm)
　　　　　pro: better effect ondeep thicker hairsuch as men's facial/groins
　　　　　con：more pain due to its deep penetration
3.Diode Laser(810nm)
　　　　　pro：used in newer tech that gradually heats bulge area of the hair follicle
　　　　　con：still underdeveloped so not so effective
4.IPL(Intensed Pulsed Light)
　　　　　pro：not that much pain
　　　　　con：can only reach shallower layer so not that effective

Concluding from these factors, alexandrite and YAG
might be the answer for a successful hair removal.

Let's see more about the details and other features of these lasers：

１．Alexandrite Laser　　　　　　

Alexandrite laser allows relatively
better melanin absorption
inside skin layers
and has the wavelength of 755nm.

When the laser energy is absorbed by the melanin
hair follicles are heated and destroyed
the process which leads permanent hair removal.

Alexandrite laser causes less skin damage
so higher laser energy can easily be applied
into hair follicles.

Generally this laser removes well finer hairs
such as body/arm/leg hairs

and fine facial hairs.


Other advantages include
relatively less pain
and lower risk of burns.

Also works for
pigments such as sunspots/freckles
and acne
a good remedy for skin revitalization.

Alexandrites disadvantages are
its weakness in penetrating deeply to thicker follicles
and not working well with darker skin tone.
Skin Type Ⅰ-Ⅲ are good candidates for thie treatment.




２．YAG Laser　　　　

YAG has longer wavelength 1064nm.

It is actually called NDYAG
and it can focus and reach deeper skin layer.

Since skin surface melanin does not absorb it that much
it only focuses on thick deeper hair follicles
even if higher energy is applied.

Less melanin absorption near skin surface
means this laser is not only usable for
lighter skin complexion
but also for darker skin tone
such as skintype Ⅳ-Ⅵ
with a very satisfactory effect.


Speaking of thick deep hairs
VIO area（Japanese terminology for
bikini line=V, groin=I, around anus area=O）

men's facial hairs

and armpit.


YAG laser disadvantages are
pain because of its power to treat deep layer.
But since at this point only YAG can treat thicker hairs
an excellent cooling system is the best remedy
to prevent it.


３．Diode Laser　　　

Diode laser has 810nm wavelength.

Its melanin absorption is almost as the same as alexandrite.
Lately it is used as a tool for
thermal heating type of hair removal device
which is not targeting melanin absorption
but instead to warm up the part of the follicle called
bulge area where follicle's stem cells are
an attempt to make them dysfuntional.


The main advantages of this treatment are
the slow warming of the target follicle
that needs less energy
meaning less pain
and since no melanin absorption
it is said to be the hope for blond and gray hair removal.


However, because this technology is still underdeveloped
not only melanin-less hairs
but even regular dark hairs
are not reacting that much with its laser.
This is the biggest disadvantage of this device.

　　　　　　
４．IPL 　　　　

IPL uses light rays
that do not include harmful rays
such as UV rays.
Different wavelength are in it
its name IPL stands for Intense Pulsed Light
some call it Photo or Foto type
which is from the name Photofacial derived.

Compared to lasers
IPL's beam penetration is
very shallow.
So its hair removal effect is very limited.


Usually performed at saloons.
Because of its poor performance
time and sessions are needed
its effect is mostly limited to very fine hairs.
facila fine hairs
Regular hairs must be treated with laser treatment
for satisfactory effect and less adverse effects.

Dark-tone skin are not treatable with IPL
because it actually causes burns.
YAG laser is the treatment of choice.



This has been about hair removal treatment.
Questions are always welcome.
Please contact us.




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