1726nm Laser for the Treatment of Acne Vulgaris
A 1726 nm laser (Thulium Fiber Laser) is a medical laser primarily used for treating moderate-to-severe acne. It works by using a specific wavelength that is preferentially absorbed by sebum (oil) in the sebaceous glands, causing them to heat up and be selectively destroyed without damaging the surrounding skin. Devices like AviClear and Accure use this technology and have received FDA clearance for treating acne, particularly inflammatory acne and comedones (blackheads and whiteheads).
Here is a detailed analysis of this laser treatment for acne:
- Mechanism of Action and Target
The core mechanism of the 1726 nm laser lies in its precise water absorption peak.
Targeting Sebaceous Glands: The laser energy is highly absorbed by water molecules in the skin. In the dermis, sebaceous gland cells (oil-producing cells) have a higher water content than surrounding tissues. Therefore, the 1726 nm laser can relatively selectively heat and disrupt overactive sebaceous glands.
Reducing Sebum Production: By gently damaging a portion of the sebaceous glands, it addresses the root cause of excessive oil secretion, a key factor in acne formation.
Anti-inflammatory Effect: The thermal energy can also help reduce the population of Cutibacterium acnes (the bacteria involved in acne) and alleviate inflammation.
- Main Advantages and Characteristics
Compared to other lasers for acne (such as 1450 nm diode lasers, KTP lasers, etc.), the advantages of the 1726 nm laser include:
Precise Targeting: Due to its unique water absorption properties, it offers superior targeting of sebaceous glands with minimal damage to the epidermis.
Lower Discomfort: The treatment typically involves only a warm, gentle heating sensation. The pain level is much lower than many other lasers, and topical anesthesia is usually not required.
Minimal to No Downtime: It is a "non-ablative" treatment, meaning it does not damage the skin's suRface. Post-treatment side effects are limited to mild redness and swelling, which usually subside within hours. Patients can typically resume normal activities immediately, making it suitable for "lunchtime procedures."
Effective for Active Acne: It effectively treats red inflammatory papules and pustules, while also showing good results for comedones.
Improves Acne Scars and Pores: By stimulating dermal collagen remodeling, it can help improve early acne scars and enlarged pores caused by excessive sebum production.
- Suitable Candidates
Patients with mild to moderate inflammatory acne.
Individuals who are intolerant to or have seen insufficient results from traditional topical medications (e.g., retinoids, benzoyl peroxide) or oral medications (e.g., antibiotics, isotretinoin).
Acne patients seeking treatment with low downtime and low pain/discomfort.
Patients who also wish to improve oily skin and enlarged pores.
- Treatment Process and Efficacy
Treatment Course: Typically, 3 to 6 sessions are required, spaced 2 to 4 weeks apart, to achieve optimal and sustained results.
Session Duration: Usually 15-30 minutes, depending on the treatment area.
Sensation: A distinct warming sensation or mild pinprick feeling is common during treatment, but most patients tolerate it well.
Efficacy: Clinical studies show that after a complete course of treatment, inflammatory lesions can be reduced by approximately 70%-80%, with a significant decrease in sebum production. Results can last for several months or longer.
- Precautions and Potential Side Effects
Side Effects are Mild and Transient: The most common is temporary redness and swelling at the treatment site, subsiding within hours. Minor crusting or temporary darkening of the skin may occur in a small number of individuals, usually resolving within a week.
Not a Universal Solution: For severe nodular or cystic acne, it often needs to be combined with oral medications or other more potent treatments (e.g., photodynamic therapy).
Maintenance Treatment: Acne is a chronic condition. Even after achieving good results, periodic maintenance treatments may be necessary to prevent recurrence.
Must be Performed by a Qualified Professional: A doctor or licensed practitioner needs to adjust the energy parameters based on the severity of the acne and skin type to ensure efficacy and safety.
Summary
The 1726 nm Thulium Fiber Laser represents a significant advancement in acne treatment. It offers an effective, well-tolerated option with virtually no downtime. It is particularly suitable as a complement or alternative to traditional drug therapies, especially for busy acne patients who are sensitive to pain and wish to return to their daily routines quickly.
Important Recommendation: If you are considering this treatment, it is essential to consult with an experienced dermatologist or a certified laser practitioner. They will conduct a comprehensive assessment of your skin condition, determine if you are a suitable candidate, and develop a personalized treatment plan.
Patients treated with a 1726-nm laser showed significant improvement in moderate-to-severe acne for ≥6 months in a prospective study.
https://www.jaad.org/article/S0190-9622(25)02900-7/fulltext
Treatment of mild to severe acne with 1726 nm laser: A safe alternative to traditional acne therapies
https://onlinelibrary.wiley.com/doi/10.1111/jocd.15964#:~:text=Abstract,1%20INTRODUCTION