Back to Blogs

Wiyoungjin

Sep 12, 2025

The frequency of underarm laser hair removal and the reasons to follow it

The frequency of underarm laser hair removal and the reasons to follow it

The frequency of underarm laser hair removal and the reasons to follow it

How many sessions of underarm hair removal will it take to finish?



Hello.

This is the Chief Director, Wi Young-jin.

When doing laser hair removal consultations,

there is a question that I hear the most.



How many sessions do I need?

How often should I do it to have permanent effects?



Today, from a doctor's perspective,

I'll talk about armpit hair removal, that is, permanent hair removal.


I will explain the cycle and number of armpit laser hair removal in detail.







If you don't know properly,

it's hard to see any effects.


Armpit laser hair removal is literally a procedure that aims to destroy the hair follicles for

permanent hair removal.


Hair in our bodies grows in cycles of growth, regression, and rest.

Among these, the laser responds best to hair in the growth phase.


However, not all hairs are in the growth phase at the same time.


​So, can one session remove everything?

Unfortunately, I have to say NO to that question.



As you go through multiple sessions,

the hair follicles gradually get destroyed, making them finer and smaller,
and eventually, you can see the desired permanent hair removal effect.





What is the cycle and number of sessions?

How does it work?



The cycle for armpit laser hair removal is

typically every 4 to 6 weeks.

To give you a reference in numbers,

if you have 10 sessions, 75%

and if you have 20 sessions, 95% will disappear.

There may be differences depending on individual skin and hair conditions, so it's essential to consult a dermatologist.

Keeping the cycle of armpit laser hair removal properly is

the key to maximizing the effect.






Even with the same 6 sessions,

the results can differ greatly.



The key to permanent hair removal is not just how many times you have done it.

The really important thing is how you do it.


For example, even if you have the same 6 sessions,

if the equipment or output adjustment is not properly suited,

the effects can significantly drop.

The laser destroys the hair follicles using heat energy.

​If the output is too weak, you won't get the desired effects,


and conversely, if it's too strong, it can cause irritation or burns on the armpit skin.

That's why the experience of skilled dermatological staff is really important.


Adjusting carefully according to skin condition and hair characteristics is necessary

to achieve satisfactory results.





What about post-treatment care and

precautions?


It's a simple procedure that allows for immediate return to daily life.

However, the skin may become slightly sensitive, so

if you keep a few things in mind, you can manage it much safer and more effectively.

1. Make sure to moisturize 💧

After the procedure, the skin may feel dry or tight.

Using a gentle, non-irritating cream or lotion

to keep it moisturized will greatly help in skin recovery.

Consistent care can prolong the effects of permanent hair removal.



2. Don't forget to use sunscreen 🌞

The armpits are not often visible, but

when wearing sleeveless shirts or swimsuits in summer, they can easily be exposed to the sun.

Applying sunscreen can help prevent pigmentation

and also helps in preventing the armpit hair from becoming coarse again.



3. It's better to avoid irritation 🚫

Right after the procedure, please avoid hot saunas,

intense workouts, and tight clothing temporarily.

Perspiration or friction can cause skin irritation and inflammation,

and if the remaining armpit hair gets irritated, recovery can take longer.




4. Soothe your skin with calming care 🧴

You may feel some redness or slight sting, but

in this case, using a cool calming pack or cooling product is good.

Lowering the skin temperature can speed up recovery

and reduce unnecessary irritation to the armpit hair.




5. Just leave it alone 🙅‍♀️

Even if the remaining hair after the procedure is bothersome,

do not forcibly pull or scratch it.

Over time, it will naturally fall out, and

this process is necessary for achieving proper armpit hair removal effects.

Also, following this process well is key to getting the desired permanent hair removal result.







Summary of Armpit Laser

Key Points


✨ The cycle for armpit laser hair removal is typically every 4 to 6 weeks.
✨ To achieve permanent effects, tailored procedures based on individual skin and hair characteristics are essential.
✨ The experience of skilled dermatological staff determines safety and effectiveness.





Frequently Asked Questions about Armpit Hair Removal
(Q&A)


Q. Are there side effects after armpit laser treatment?


A. Skin irritation, burns, and pigmentation may rarely occur.





Q. Does the skin become sensitive after the procedure?


A. Yes, the skin may become sensitive right after the procedure.

Therefore, calming and moisturizing care is necessary.





Q. Is there a risk of burns?


A. If the output is too strong,

burns can occur on sensitive areas like the armpits.

That's why it's safest to receive treatment at a dermatologist with experience.




Q. Can I return to daily life immediately after treatment?


A. Yes, you can.

​However, since the skin may be sensitive, it is advisable to avoid irritation and

to apply sunscreen.

It is most important to accurately follow the cycle of armpit laser hair removal

and to manage consistently.






Thank you sincerely for reading this long article to the end today.

Many people ask, "How many sessions will it take to finish?" but

​the important thing is to receive proper treatment suited to my skin condition.

With experienced dermatological staff, you can reduce unnecessary side effects and

achieve the desired results much faster and more safely.

I will continue to provide you with helpful

information and tips about dermatology.

Thank you for reading.

This was Wi Young-jin.

Recommended Beauty Column

Recommended Beauty Column

Recommended Beauty Column

Direct Columns Written by Directors Wi Young-jin, Kim Jang-ju, Kim Ha-won, and Kim Ga-eul

Honest and sincere description of skin beauty treatments

Direct Columns Written by Directors Wi Young-jin, Kim Jang-ju, Kim Ha-won, and Kim Ga-eul

Honest and sincere description of skin beauty treatments

Wi Young-jin, Kim Jang-joo, Kim Ha-won, Kim Ga-eul
Direct Column Written by the Director

Honest and sincere description of skin beauty treatments