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As a person without growth!

Hello,
This is Director Wi Yeong-jin.
The philtrum area on a person's face is small in size but
is where the gaze often lingers.
As a result, men are troubled by the appearance of dark hair right after shaving,
and women often struggle with the subtle visibility of makeup on their skin.
Today, I would like to organize key content related to this topic
in a more in-depth manner.
1.Principle & Effect — 1 Minute Summary

Laser hair removal uses light energy that reacts to melanin pigment
to transmit heat to
the hair follicle and surrounding stem cells,
thus inhibiting hair growth.
In particular, growing hair responds best,
and repeated treatments are necessary for hair to gradually thin out and
closer to permanent results can be expected.
The philtrum contains both coarse and fine hair,
even in the same area, the hair types vary, and
therefore, satisfaction can greatly differ depending on the precision of the equipment settings (wavelength, pulse width, energy).
Rather than simply approaching with the mindset of “a few sessions will be enough,”
it should be adjusted by observing changes and reactions in the hair
to achieve much more effective results.
This part is also
a key point emphasized in our services.
2. Key Points

1) Precision in Energy Control
Among the factors determining the effectiveness of hair removal,
the most important is energy intensity control.
If the energy is too low,
the heat does not reach the stem cells, and
hair will regrow after a few weeks,
and if it’s too strong, the risk of side effects like burns or pigmentation increases.
Especially, the philtrum is a sensitive and thin-skinned area,
so just using a strong setting is not always beneficial,
and settings must be adjusted each session according to
individual hair density, thickness, and skin tone
to achieve stable results.
There is a significant difference in hair thickness between men and women,
and even for the same person, as treatments accumulate,
the hair becomes thinner, so
applying the same settings every time will
actually reduce effectiveness.
Thus, a skilled medical professional who can
carefully observe reactions
and make fine adjustments is vital.
For this reason, if you are searching for a dermatologist in Dangsan,
we recommend a place that offers individualized settings.

2) Equipment Selection ft. The Role of Pulse Width
The second most important factor is
the performance of the equipment used.
The commonly used
755nm Alexandrite laser is
effective for light-skinned people with fine hair, but
it has limitations for darker skin tones or coarser hair.

Therefore, equipment that supports dual wavelengths (755nm + 1064nm)
is more stable and has a wider application range.
Moreover, the range of pulse width control is also
essential to verify.
The philtrum has coarse hair and
fine vellus hair mixed together,
so long pulse widths alone cannot
effectively target the vellus hair.
Equipment like the GentleMax Pro Plus, which can
precisely adjust to short pulse widths,
accurately captures the roots of both coarse and fine hair,
resulting in a clear difference in outcomes.
Particularly, equipment that can reduce pulse width to about 2ms
shows strengths in vellus hair removal.
Moreover, since the philtrum is an area that feels pain keenly,
equipment with a strong cooling system that uses gas discharge would be
much safer in terms of pain reduction and preventing skin damage.
All these elements must be in place
to expect not only hair reduction
but also a state where hair does not grow back.
3. Differences in Hair Removal Between Genders
The philtrum may appear simple at first glance, but
the hair structure and skin characteristics of men and women
are clearly different, so
the approach itself must differ.
▷ Characteristics of Men

The photos above were taken on the day of treatment (2025.02.14) and in the 23rd week post-treatment under the same conditions.
They are uploaded as original without brightness or color corrections.
There may be individual variations and were posted with personal consent.
😊 High ratio of coarse terminal hair and large melanin content, resulting in very high heat absorption
😊 Often experience sensitivity or pigmentation from repeated shaving
😊 Initially, a higher energy setting is needed, but adjustments must be made within safe margins for the skin
😊 Maintaining consistent intervals between sessions is more effective as hair grows strongly
▷ Characteristics of Women
😊 A structure with a high ratio of both coarse hair and vellus hair
😊 Vellus hair has less melanin, therefore short pulse widths and delicate energy settings are essential
😊 Often observe fine hair showing through makeup, so even subtle changes are perceptible
😊 Coarse hair tends to decrease relatively quickly, but vellus hair decreases gradually, so fine adjustments each session are crucial
Regardless of whether it's hair removal on the philtrum,
the structure and characteristics of hair differ
and the strategy must change to ensure stability.
Q&A — When can women start wearing makeup after philtrum hair removal?

Q. Is it okay to wear makeup right after hair removal?
A. Light makeup is possible after at least 6 to 12 hours.
The philtrum is a sensitive area,
and applying makeup immediately after treatment may lead to
redness, itching, or irritant contact dermatitis, so a brief rest period is necessary.
▷ Immediately after treatment
Only apply a light moisturizer
Avoid tight makeup like foundation, cushion, and concealer
▷ After 6 to 12 hours
If there is no redness or heat, a light base is possible
However, it's recommended to wait a day for thick cover makeup
▷ Sensitive skin
Makeup is recommended after 24 hours.
▷ Precautions
Avoid exfoliation, scrubbing, and waxing for 5 to 7 days.
Do not expose to heat stimuli like hot showers, saunas, or exercising.
If prone to folliculitis, at least wear a mask on the day of treatment.
Delaying makeup does not reduce the hair removal effect,
so there's no need to worry.
Summary of Today's Content
🌙Summary of key principles targeting hair follicles and stem cells
🌙The principle of targeting hair follicles and stem cells
results in effective hair removal.
🌙Energy control for each session is the key to effectiveness.
🌙Equipment with finely adjustable pulse width
determines the outcome.
🌙The structure and hair characteristics differ between genders
thus necessitating different approaches.
🌙It’s advised for women to wait at least 6 to 12 hours before applying makeup after treatment.
Thank you for reading this lengthy article.
This has been Wi Yeong-jin.

















