LLLT Hair Growth System

Q1: What is the core difference between the KN‑8000A medical version and the home hair growth helmet?

A: The KN‑8000A is an institutional desktop cantilever medical device with more laser diodes and a larger irradiation area. It supports zoned light control and continuous/pulsed dual modes. Its energy is medically calibrated, making it suitable for standardized in-hospital treatment courses. The home helmet is a wearable all-in-one device, suitable for home consolidation and maintenance. The medical version is not retailed to ordinary individuals and is exclusively for hospitals and medical aesthetics hair loss specialty institutions.

Q2: What are the core configurations of the product?

A: It uses a 655nm semiconductor cold laser light source; a multi-angle adjustable hovering cantilever treatment module; a large touchscreen for operation; continuous and pulsed working modes; distance positioning to ensure stable treatment energy; and an LED auxiliary light source for scalp anti-inflammatory repair.

Q3: What are the indications on the registration certificate?

A: It is suitable for head irradiation to promote hair growth; it can be used for analgesia, anti-inflammation, and tissue repair; the LED light source can assist in improving allergic dermatitis and inflammatory acne.

Q4: Which patients are suitable for treatment with this device?

A: ① Mild-to-moderate androgenetic alopecia, with vellus hair still present on the scalp and hair follicles not closed; ② adjunctive intervention for telogen effluvium and postpartum hair loss; ③ maintenance of native hair after hair transplantation; ④ hair loss patients intolerant to hair loss medications; ⑤ adjunctive treatment for alopecia areata.

Q5: In which cases is use prohibited?

A: Scalp ulceration, infection, or acute stage of eczema; smooth scalp without vellus hair and complete hair follicle necrosis; head tumors, photosensitive diseases, or taking photosensitizing drugs; pregnant women and minors require physician evaluation and are generally not treated.

Q6: What is the standard in-hospital operating procedure?

A: 1. Before treatment, wash and dry the scalp, remove styling products, and fully expose the scalp; doctors and patients should wear matching laser protective goggles, and looking directly at the light source is prohibited; 2. Adjust the cantilever treatment head, control the irradiation distance, turn on the corresponding treatment module as needed, and select the mode and set the time; 3. Typically 2–3 times per week, 15–30 min per session; 4. The device stops automatically; wait several hours after treatment before washing hair; if combined with minoxidil, apply it after the scalp is completely dry.

Q7: How to choose between continuous mode and pulsed mode?

A: Continuous mode is used for routine androgenetic alopecia and standard hair growth treatment; pulsed mode is suitable for people with sensitive scalp and accompanying scalp inflammation, reducing light stimulation and making treatment gentler.

Q8: How long does it take to observe improvement?

A: At 2–4 weeks, scalp oiliness, dandruff, and itching may be relieved; at 2–3 months, hair loss decreases and hair root strength improves; at 3–6 months, vellus hair increases and the hair parting improves; at 6–12 months, better clinical results are achieved. This device is an adjunctive treatment. After stopping treatment, hair loss will return to its original physiological trend, and maintenance treatment is needed.

Q9: Can medical laser replace drugs or hair transplantation?

A: No. Mild-to-moderate androgenetic alopecia can be treated with laser alone; for moderate-to-severe androgenetic alopecia, laser combined with drugs is recommended for synergistic intervention; when hair follicles are completely closed, laser has no improvement effect, and hair transplantation evaluation is recommended.

Q10: During in-hospital treatment, can a home hair growth helmet be used together?

A: It can be used for later maintenance. Do not superimpose in-hospital and home irradiation on the same day to prevent excessive light dose. After the in-hospital course is completed, use the home device for home consolidation.

Q11: Is the laser risky to the eyes?

A: The device is a Class 3R laser. Looking directly at the laser diodes is strictly prohibited. Throughout the treatment, medical staff and patients must wear matching protective goggles.

Q12: What adverse reactions may occur?

A: Most patients have no discomfort; a few experience temporary scalp redness and itching, and may shorten treatment duration and reduce treatment frequency; if redness, swelling, and stinging persist, stop treatment immediately and consult a dermatologist; this device uses cold laser, and normal operation will not cause scalp burns.

Q13: How should the medical device be maintained?

 A: After the device cools down, wipe the housing with a soft dry cloth; do not flush or soak with water; do not directly wipe the laser diodes with alcohol to prevent light source damage; medical institutions should regularly complete device power output calibration.