摘要

Objectives: Hyperpigmentations can affect people of all ages and skin types. They involve more frequently sun exposure areas and represent a major aesthetic concern. Despite the availability of multiple treatments for the condition, hyperpigmentation continues to present clinical management challenges for dermatologists. Recently, new technologies have been developed to treat benign hyperpigmentations. Introduction: As benign pigmented lesions are very popular treatment in dermatology, Tattoo removal treatment is now increasing in popularity. New technology advanced Pico and Q-switched lasers platforms now other than to represent the gold standard in the treatment of these conditions, they provide faster and accurate results. For this reason, the picosecond 785-nm laser offers a higher safety profile compared to other types of lasers. Materials / method: Our study aimed to conduct an interesting assessment of the application of a picosecond 785 nm handpiece with square and round spot and different fluences ranging from 0.5 to 2.0 J/cm2 for the treatment of hyperpigmentations, Ota Nevus, Lichen Pigmentosus and some coloured tattos, to minimize blood absorption and maximize the absorption of melanin. Results: At the three-month follow-up, the clinical images substantiated aa complete improvement of benign pigmentations, near-complete resolution of melasma, estimated to be approximately 75–95%, marked by the absence of any discernible adverse events. Even tattos achieved a resolution of 90-100% at different times and with different parameters depending on the type of tattoo. Conclusion: Our results not only underscores the efficacy of the applied therapeutic interventions but also bolsters the assurance of a favorable safety profile for the treatment protocol. In conclusion, the use of the 785 nm wavelength in our study was warranted to improve melanin absorption when compared to blood absorption. It has been confirmed that the device utilized in this study has a good safety record.