Principle of treatment

Laser hair removal uses wavelength 755 laser to penetrate the epidermis, so that the melanin of the hair follicle absorbs energy and produces high temperature to destroy the growth structure of the hair follicle, so as to achieve the purpose of hair reduction. Hair removal cannot be done in one fell swoop. The three stages of hair growth are the anagen, catagen, and telogen phases. Melanin only occurs during anagen, so lasers can only target hair follicles during the growth phase. Generally speaking, hair removal requires 4 to 5 courses of treatment (depending on your physical condition, please discuss with your doctor).

Notes before treatment

• Stop using stimulants such as retinoic acid and AHA at the treatment site 3 days before treatment.
• Prepare your skin by shaving 3-4 days before your laser treatment.

Post-treatment care

• At the end of the treatment, the hair will fall off and the skin will be temporarily warm and red. Usually 20 minutes after applying an ice compress or cold blowing, the symptoms will gradually fade away.
• Within 3 days after treatment, avoid using irritating drugs (e.g. retinoic acid and AHA) and exfoliating products, and do not stay in high temperature places (e.g. sauna, beside a heater or oven, hot spring).

Frequently Asked Questions (FAQ): Laser Hair Removal

• Q: Can laser hair removal achieve permanent hair removal?
• A: According to the U.S. FDA, "permanent hair reduction" is defined as a long-term, stable reduction in hair growth—typically an 80% to 90% reduction—maintained over several years. It does not imply that 100% of the hair will never grow back. Instead, it means the hair regrowth cycle is significantly delayed, and any new hair will be finer, softer, lighter in color, and much less noticeable in density and appearance.
• Q: Who is not a suitable candidate for Alexandrite Laser?
• A: Individuals with the following conditions should avoid or postpone treatment:
• Women who are pregnant or breastfeeding.
• Patients with a history of keloid scarring.
• Individuals recently taking photosensitizing medications (e.g., Isotretinoin/Accutane, certain antibiotics, or oral contraceptives). It is recommended to discontinue these 3–5 days prior to treatment.
• Active Herpes Simplex Virus (HSV) infections in the treatment area.
• Q: Are there any side effects after treatment?
• A: Temporary localized discomfort, swelling, or redness may occur.
• Pigmentary changes: Hypopigmentation (whitening) or hyperpigmentation (darkening) may appear after several hours or a day, most commonly in individuals with darker skin tones or those with inadequate sun protection post-treatment.
• Minor reactions: Occasional blistering or crusting can occur, which can be managed with intense hydration and soothing care.
• Note: If any discomfort or abnormal skin reaction persists for more than 48 hours, please return to the clinic for a professional evaluation by a physician.
• Q: How many sessions are required for laser hair removal?
• A: Due to the nature of hair growth cycles, 6 to 10 sessions are typically required for optimal long-term results. The intervals between sessions depend on the treatment area:
• Face and Underarms: Shorter cycles; treatments are scheduled every 4–6 weeks.
• Arms and Legs: Longer cycles; treatments are scheduled every 6–8 weeks.
• Consistency is key to targeting hair in the active growth phase (anagen) and achieving significant reduction.