This study shows that perineural PRP injection could promote improvement of peripheral neuropathy sensibility in patients with leprosy. More research is needed to better determine the effects of PRP in nerve regeneration.

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To compare the effectiveness of tranexamic acid (TA) combination serum with hydroquinone, the gold standard in whitening agents for healthy populations. This was a three‐arm randomized controlled trial. The subjects were divided into three groups: the first group received 3% TA combination serum (3% TA, 4% galactomyces ferment filtrate, 2% niacinamide, and 4% alpha arbutin), the second group received 2% TA combination serum, and the third group received 4% hydroquinone. One milliliter of each serum was applied on three holes: Hole A, which was located 4 cm from the left cubital fossa, Hole B, which was located 4 cm from the first hole, and Hole C, which was located 4 cm from the right cubital fossa. The skin brightness and pigmentation intensity were evaluated each week for 4 weeks using a chromameter. A total of 44 subjects were recruited for this study. All groups showed a significant improvement in skin brightness and pigmentation intensity after 4 weeks (p < .001). There were no differences between the treatment groups and hydroquinone (p > .05). TA serum (2 and 3%) combined with 4% galactomyces ferment filtrate, niacinamide, and alpha arbutin is an effective depigmenting agent.

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