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  • Title: Deep peeling using phenol versus percutaneous collagen induction combined with trichloroacetic acid 20% in atrophic post-acne scars; a randomized controlled trial.
    Author: Leheta TM, Abdel Hay RM, El Garem YF.
    Journal: J Dermatolog Treat; 2014 Apr; 25(2):130-6. PubMed ID: 22397516.
    Abstract:
    BACKGROUND: Deep peeling using phenol and percutaneous collagen induction (PCI) are used in treating acne scars. AIM: To compare deep peeling using phenol and PCI combined with trichloroacetic acid (TCA) 20% in treating atrophic acne scars. METHODS: 24 patients with post-acne atrophic scars were randomly divided into two groups; group 1 was subjected to one session of deep peeling using phenol, and group 2 was subjected to four sessions of PCI combined with TCA 20%. As a secondary outcome measure, side effects were recorded and patients were asked to assess their % of improvement by a questionnaire completed 8 months after the procedure. RESULTS: Scar severity scores improved by a mean of 75.12% (p < 0.001) in group 1 and a mean of 69.43% (p < 0.001) in group 2. Comparing the degree of improvement in different types of scars, within the same group after treatment, revealed a significant highest degree of improvement in the rolling type (p = 0.005) in group 2. CONCLUSION: Deep peeling using phenol and PCI with TCA 20% were effective in treating post-acne atrophic scars.
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