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Original

Prospective clinical and histological study to evaluate the efficacy and safety of a targeted high‐intensity narrow band UVB/UVA1 therapy for striae alba

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Pages 79-83 | Received 27 Feb 2007, Accepted 02 Mar 2007, Published online: 12 Jul 2009
 

Abstract

Objective: The purpose of this study was to determine the efficacy and safety of a targeted narrow band UVB/UVA1 therapy for the treatment of striae alba. Methods: Fourteen individuals with skin types II–VI were enrolled in this 22‐week trial that consisted of up to 10 treatments with a combination of UVB/UVA1 (MultiClear, Curelight Ltd, Israel). Participants were treated with a maximum of 10 treatments unless 100% repigmentation of stretch was achieved prior to the tenth treatment. Biopsies were taken from willing participants at baseline, immediately after the final treatment and 12 weeks after the last treatment. Results: Nine participants completed all treatment visits. After the final treatment, all the participants had>51% repigmentation of the treated striae. At the 4‐week follow‐up visit, 67% of participants had greater than 51% improvement, and 56% had greater than 51% improvement at the 8‐week and 12‐week follow‐ups. Hyperpigmentation of striae was seen in>50% of the participants treated. The pretreatment biopsies were confirmatory of striae. There were no diagnostic light microscopic differences in the 4‐week post‐treatment biopsy set available in one patient. Conclusion: This high intensity UVB\UVA1 device is an effective and safe modality for the short‐term repigmentation of hypopigmented stretch marks. Additional morphologic studies over time are needed to confirm these clinical findings.

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