1550 nm Non-Ablative Fractional Laser Skin Resurfacing of the Scalp: Evaluating Effects on Hair Growth Without Topicals

Author: Vuong The Bich Thanh, MD - Dr. Bich Thanh Dermatology and Aesthetics Clinic, Ho Chi Minh City, Vietnam

This Case Spotlight highlights the effects of non-ablative fractional laser (NAFL) skin resurfacing on hair growth in a 30-year-old Asian female with female pattern hair loss (FPHL). The patient, classified as Ludwig Type II, underwent four sessions of skin resurfacing to the scalp using the Nordlys^® 1550 nm NAFL without adjunctive topical therapies. The laser treatment targets water in the skin, delivering heat to the deep dermis to activate skin cells and fibroblasts, which release growth factors and cytokines to potentially stimulate hair growth, reduce follicular shrinkage, and modulate inflammation.

The treatment protocol included sessions spaced two to four weeks apart, with mild erythema as the clinical endpoint. The patient experienced minimal discomfort with treatment. Visible improvements in hair density and the appearance of new hair shafts were observed one month after the final session. The new hairs matched unaffected areas in thickness, length, and color, and the patient reported high satisfaction with the aesthetic results and improved confidence in her appearance.

The study underscores the potential of 1550 nm NAFL for hair regeneration without topical agents, highlighting its ability to rejuvenate tissue and promote hair growth with minimal downtime. The patient resumed normal activities, including shampooing, within 24 hours of post-treatment.