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Why Hair Keeps Growing Even After Using a Leg Epilator, and How Laser Hair Removal Works

Why Hair Keeps Growing Even After Using a Leg Epilator, and How Laser Hair Removal Works Beomgye, Pyeongchon, Beomgye Station, Pyeongchon Station, Hogye-dong, Bisan-dong, Gwanyang-dong, Dongan-gu, Indeogwon, Geumjeong, Anyang

9/29/2026

This is a procedure note for Why Hair Keeps Growing Even After Using a Leg Epilator, and How Laser Hair Removal Works at Beomgye(Opening Soon) KKEUT Korean Clinic.

Many people experience hair growing back after a few weeks, even when consistently using at-home hair removal devices on their legs.



This is not due to a lack of device performance, but rather differences in the biological structure of hair growth and the intended purpose for which the device was designed.



In this article, we will examine the reasons why hair grows back, focusing on the hair follicle and hair growth cycle, and explain the mechanism of action of medical laser hair removal.







Hair Does Not Grow Simultaneously



The leg hair visible to our eyes represents only a portion of the total hair follicles that are currently in the growth phase.



Each hair follicle undergoes its growth and resting phases differently. Therefore, in the same area of the leg, active hairs and resting hairs appear mixed.



Even if the visible hair is removed, there are still hairs beneath the skin that have not yet emerged. When hair in the resting phase enters the growth phase, new hair may reappear in the area that was previously treated.



Hair regrowth is a natural phenomenon of the hair follicle growth cycle.







At-Home Hair Removal Devices and Medical Lasers Serve Different Purposes



At-home hair removal devices are designed for convenient personal care at home. Their output is set considering the home environment.



In contrast, laser equipment in medical facilities is designed to allow skilled medical professionals to meticulously assess the patient's skin condition and hair characteristics, and adjust energy and pulse settings accordingly.



This is not a matter of superiority in performance, but rather that each serves a different purpose. At-home devices focus on daily maintenance, while medical laser hair removal aims to act on the hair follicle itself, which generates hair.







Laser Hair Removal Utilizes Melanin Pigment and Hair Follicle Characteristics



The energy emitted from the laser is primarily absorbed by the dark melanin pigment in the hair, which is then converted into thermal energy.



This heat is delivered to the hair root and follicle areas involved in hair growth, thereby impairing the function of those hair follicles.



The core principle of the treatment is not merely to remove visible hair, but to affect the fundamental area where hair is generated.







Effective Only on Anagen Hair Follicles, Therefore Repeated Treatments Are Necessary



Lasers work more effectively on anagen hair follicles, which are the most active and rich in melanin pigment.



Since anagen hair follicles have random and individual characteristics, it is difficult for a single laser treatment to be effective on all follicles. Therefore, it is recommended to undergo multiple repeated treatments, timed with the cycle in which resting hairs transition into the growth phase.



Generally, more than 10 sessions are recommended, with treatment intervals of at least 3 to 4 weeks. This is because the skin's stratum corneum regeneration cycle is approximately 4 weeks, and new anagen hairs need sufficient time to be ready.







Pre and Post-Treatment Precautions



It is important to shave before visiting for treatment. If hair length is long, laser energy can be unnecessarily consumed on the skin surface, increasing the risk of burns and making it difficult for energy to be effectively delivered to the hair root.



During the treatment period, you should refrain from plucking hair. If hair is plucked, the hair root, which is the target of the laser, will disappear, potentially reducing the effectiveness of the treatment.



After treatment, it is best to shave starting the day after, once the skin has sufficiently calmed down. Pain during the procedure varies by individual, but it is similar to a stinging sensation when using an ice cooler, and may gradually decrease as the amount of hair reduces.







Consistent Management is a Realistic Goal



Permanent and complete hair removal is realistically difficult. It is important to reduce the amount of hair and lessen the burden of management through consistent care. Even after the initial treatments are complete, receiving maintenance sessions every 2-3 months can lead to more satisfying results.







Kkeut Korean Medicine Clinic Provides Meticulous Treatments Tailored to Hair Characteristics



Kkeut Korean Medicine Clinic uses equipment with proven performance and stability, such as Apogee and GentleMax. Specifically, Apogee incorporates a continuous air cooling system before and after treatment, which can help reduce skin irritation.



At Kkeut Korean Medicine Clinic, we adjust pulse duration and energy density according to the patient's hair thickness. For thick hair, we deliver thermal energy gently with a long pulse to protect the epidermis. For fine and weak hair, we meticulously adjust the energy or use repeated irradiation to ensure heat effectively reaches the hair root.



In areas with dense hair, energy is appropriately distributed to reduce the risk of overheating. For darker skin tones, we carefully observe the skin's reaction and adjust the output with even greater precision.



Before completing the treatment, we double-check with the patient if there are any additional areas of concern. Especially for areas of significant worry, based on the medical staff's judgment, we focus the energy even more meticulously to enhance satisfaction.











Frequently Asked Questions



Q. Why does hair grow back even after using an at-home leg hair removal device?


A. Even after removing hair with an at-home leg hair removal device, new hair can reappear when hair follicles in the resting phase transition into the growth phase. This is because each hair follicle has a different growth cycle, causing hair to emerge at different times.



Q. I'm using an at-home leg hair removal device, is it okay to pluck hair before a laser hair removal treatment?


A. Even if you are currently using an at-home leg hair removal device, it is important to avoid plucking hair during the laser hair removal treatment period. If you pluck hair, the hair root, which is the target of the laser, will be gone, making it difficult to achieve the desired effect. Please shave just before your appointment on the day of the treatment.



Q. If I receive laser hair removal treatment instead of using an at-home leg hair removal device, how many sessions are needed?


A. Regardless of the area, including the legs, generally more than 10 sessions are recommended. Treatment intervals of at least 3 to 4 weeks are appropriate. This is independent of whether you previously used an at-home leg hair removal device, and results may vary depending on individual hair condition and skin characteristics.



Kkeut Korean Medicine Clinic's Philosophy


Kkeut Korean Medicine Clinic strives to deliver more satisfying treatment results by using safety-verified equipment and meticulously adjusting pulse and energy density.


At Kkeut Korean Medicine Clinic, we operate our treatment process with patient communication at its core. We carefully listen to our patients' opinions until the very last stage of the procedure, and proceed thoughtfully through thorough consultation to enhance the completeness of the treatment.


At Kkeut Korean Medicine Clinic, we meticulously analyze individual characteristics before performing treatments. We adjust the intensity of the procedure in a suitable manner, considering factors such as hair thickness, the treatment area, and the patient's skin tone. This customized process can enhance the safety of the procedure and help achieve desired results.



The difference made by a delicate approach — Kkeut Korean Medicine Clinic aims for excellent results through treatments tailored to the unique characteristics of each and every patient.

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