A Complete A–Z Guide to Underarm Hair Removal Treatments

22/12/25
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Underarm hair removal is one of the most popular beauty treatments, helping women feel more confident with smooth, clean, and fresh-looking skin—free from unwanted underarm hair. So how many sessions does a full underarm hair removal treatment require? How is it performed? Does it hurt? And how should you care for your skin afterward? Let’s explore everything from A to Z with HBIO Clinic in the detailed guide below.

Detailed Underarm Hair Removal Treatment at HBIO Clinic

Underarm hair removal is not only about aesthetics—it also enhances comfort and confidence, especially when wearing sleeveless or body-hugging outfits. At HBIO Clinic, underarm hair removal is performed using advanced Diode Laser technology, delivering outstanding results while remaining safe and suitable for all skin types.

Key Benefits of Underarm Hair Removal at HBIO Clinic

  • Long-lasting hair reduction: Diode Laser energy targets hair follicles directly, slowing regrowth or preventing it after a proper treatment course.
  • Minimal discomfort & high safety: Optimized wavelengths combined with an integrated cooling system help reduce pain and protect sensitive underarm skin.
  • Improved skin quality: Not only removes hair but also smooths the skin, reduces folliculitis and ingrown hairs, leaving the underarm area clean, soft, and brighter.
  • Quick treatment time: Ideal for busy individuals with limited time.
Triệt lông nách tại Hbio Spa với công nghệ hiện đại 
Underarm hair removal at Hbio Spa with modern technology.

Treatment Procedure at HBIO Clinic

The underarm hair removal process at HBIO Clinic follows a medically standardized protocol. However, specific steps may be adjusted depending on each client’s skin condition, sensitivity, and individual physiology:

  1. Consultation & assessment: A dermatologist or trained technician examines the underarm hair and skin to determine the most suitable treatment plan.
  2. Cleansing & exfoliation: The underarm area is thoroughly cleaned and gently exfoliated to prepare the skin.
  3. Patch test: Light tolerance is tested on a small area to ensure safety.
  4. Diode Laser treatment: The technician performs hair removal using a laser handpiece equipped with a cooling system to minimize heat and stinging sensations while protecting the skin.
  5. Soothing & recovery care: After treatment, a calming gel or specialized cream is applied, and clients receive detailed aftercare instructions.
  6. Follow-up scheduling: Clients are booked for subsequent sessions as recommended to achieve optimal results.
Quy trình thực hiện triệt lông bài bản tại HBIO
The professional hair removal procedure at HBIO.

Reference Pricing

According to publicly available information, Diode Laser hair removal services at HBIO Clinic start from approximately 50,000 VND per session (for small areas), depending on the treatment plan and target area.

How Many Sessions Are Needed for Underarm Hair Removal?

At HBIO Clinic, a full Diode Laser underarm hair removal course typically requires 5–8 sessions, with each session spaced about 3–4 weeks apart, depending on individual hair growth cycles and skin type. After completing the course, approximately 85–90% of hair is removed, with weakened follicles and significantly reduced regrowth over a long period.

Compared to older methods such as IPL or waxing, Diode Laser technology penetrates deeper into hair follicles, reduces the number of required sessions, and ensures safety—without burns, darkening, or irritation.

Proper Aftercare Following Underarm Hair Removal

After underarm hair removal, the skin may be more sensitive than usual. Proper aftercare is essential to maintain smooth, bright skin and prevent irritation or infection. Here are important guidelines to follow:

1. Avoid Shaving, Plucking, or Waxing During the Treatment Course

After each session, hair may grow back finer and sparser, but follicles still need time to weaken completely. Shaving, plucking, or waxing can cause ingrown hairs, thicker regrowth, and skin damage, increasing the risk of folliculitis.

Follow the treatment plan strictly as advised by your specialist for optimal results.

Không tự cạo, nhổ hay wax lông
Do not shave, pluck, or wax your hair.

2. Gentle, Scientific Skincare

For the first 3 days after treatment, avoid harsh cleansers or fragranced body washes. Choose mild, gentle cleansers or baby products to clean the area without irritation.

Chăm sóc da khoa học, nhẹ nhàng
Scientific and gentle skincare

Additionally, cleanse the underarm area with saline solution, apply moisturizer to keep the skin soft and smooth, and gently exfoliate weekly to prevent clogged pores.

If the skin shows signs of redness or mild itching, you can apply ice packs or cold tea bags for quick relief.

3. Wear Loose, Breathable Clothing

After underarm hair removal, the skin may be sensitive and prone to irritation. Wear loose-fitting, breathable clothing that absorbs sweat well to minimize friction and allow faster recovery, reducing the risk of folliculitis and small bumps.

4. Maintain a Healthy Lifestyle

To prolong treatment results, ensure adequate sleep, avoid staying up late, and increase water intake. A diet rich in vegetables and vitamin C helps support healthy, radiant skin from within.

A healthy lifestyle not only slows hair regrowth but also accelerates skin recovery after hair removal.

Thiết lập lối sống lành mạnh sau triệt lông 
Establishing a healthy lifestyle after hair removal

A medically standardized underarm hair removal treatment not only removes hair from the root but also brightens the underarm area, smooths the skin, and significantly reduces darkening. However, results depend on the technology used, the technician’s expertise, and proper post-treatment care.

If you are looking for a reputable, safe, and effective underarm hair removal clinic in Hanoi, HBIO Clinic is a top choice—offering personalized treatment plans, advanced technology, and a team of experienced dermatology specialists. Enjoy the confidence of wearing sleeveless outfits again, without worrying about unwanted underarm hair returning.


Dr. Thai Nguyen – Founder and Medical Director of HBIO Clinic. As an expert in aesthetic dermatology, she regularly shares in-depth knowledge and practical experience to provide valuable and insightful information for those seeking better skin health.