Efficacy and Safety Evaluation of a Novel Low-Fluence, High-Frequency Approach for Unwanted Hair Removal

BACKGROUNDHigh-fluence laser hair removal procedures have provided permanent solutions for unwanted hair growth. However, their association with uncomfortable sessions and adverse effects has prompted the evaluation of new hair removal techniques.

OBJECTIVEThis study compares the efficacy and safety of a new laser method (linear FDHR; low fluence, high frequency, and controlled movements) with the traditional technique (DHR; high fluence and low frequency), using the Eneka PRO laser device (Termosalud Inc., Gijón, Spain).

MATERIALS AND METHODSThirteen body areas (skin phototypes II–IV) were treated 8 times at 2-month intervals. DHR mode was applied to one side of the treatment area, whereas linear FDHR mode was delivered on the contralateral side. Efficacy was evaluated 2 months after the final session by digital photographs and hair counts. Safety was assessed during the treatment period and at 6-month follow-up visit. Participant satisfaction was assessed via a customized questionnaire.

RESULTSAt the follow-up, hair clearance rates of the linear FDHR and DHR method (83% and 91%, respectively) were significant (p < 0.05) and comparable (p > 0.05). Common adverse effects were detected through the treatments and no unexpected adverse effects or long-term adverse effects occurred. Linear FDHR method was associated with less discomfort (31%) when compared to DHR (54%) (p < 0.05). 62% of the participants reported no difference in satisfaction levels between the 2 modes.

CONCLUSIONThe linear FDHR technique is a noninvasive, effective, safe, and well-tolerated alternative to the traditional method for the removal of unwanted hair.

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