Successful Treatment of Freckles by Alex Trivantage Laser Wavelight 755 nm in Vietnamese Patients

Abstract

OBJECTIVES:This study aims to evaluate the effectiveness of Alex Trivantage laser wavelength 755 nm (ATL) in the treatment of freckles at Hanoi Hospital of Dermatology and Venereology, Vietnam.PATIENTS AND METHODS:A group of 30 patients with freckles were treated by ATL (Alex Trivantage-Candela Co America) with spots size 3 mm, wavelength 755 mm, and energy 5-6 j/cm2. All the patients were treated 2 times with 4-weeks interval. The results were evaluated at 4, 8, and 12 weeks after treatment. The colour of the lesions was evaluated by using Von-Luchan’s chromatic scale and Visia® complex analysis system. Brown spot index (BSI) was calculated by the VISA complexion analysis system devices. The data was analysed by SPSS 16.0.RESULTS:After 2 times of treatment, the lesion colour of all of the patients had been improved. The good and very good levels of improvement were noted in 63.3% of patients; there was 26.7% of them had partial improvement. Brown spots index was significantly improved (39.13 ± 20.66 before and 54.23 ± 16.78 after treatment; p < 0.001). Hyperpigmentation was noted in 6.7% of patients.CONCLUSION:freckles have been improved by treatment with Alex trivantage laser wavelength 755 nm with safety.

The mechanism and application of computer‐assisted full facial skin imaging systems

“…Based on clinical images and data provided by computer‐assisted facial imaging systems, the severity and treatment efficacy of various facial skin diseases can be assessed. A combination of white light images with UV spot images or brown spot mode is commonly applied for severity evaluation and follow‐up of pigmented facial skin diseases 14 such as dull skin, 15 , 16 freckles, 17 melasma, 18 , 19 post‐inflammatory pigmentation, 20 , 21 and Riehl melanosis. 22 In the study of facial inflammatory dermatoses, white light mode and red area mode with or without UV light images are frequently combined to evaluate the condition, including acne, 23 , 24 rosacea, 4 , 6 , 25 , 26 , 27 rosacea‐like dermatitis induced by steroids, 28 and seborrhoeic dermatitis 29 in addition to facial vascular anomalies such as port wine stains.…”