Journal
JOURNAL OF COSMETIC DERMATOLOGY
Volume 20, Issue 1, Pages 18-27Publisher
WILEY
DOI: 10.1111/jocd.13556
Keywords
acne scars; chemical peels; chemical reconstruction of skin scars; varicella scars
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The CROSS method is an effective and safe treatment for atrophic scars, especially for treating ice-pick scars. However, current published studies have limitations such as small sample sizes, lack of control groups, and variations in acid concentrations and treatment frequencies, necessitating larger randomized controlled trials to establish the optimal treatment protocol.
Background Chemical reconstruction of skin scars (CROSS) applies a high strength acid focally to treat atrophic scars. Although this method has gained popularity over the past two decades, no standardized treatment guideline exists for CROSS method in the treatment of atrophic scars. Aims The purpose of this comprehensive review was to evaluate the indications, detailed techniques, efficacy, and safety of CROSS method. Materials and Methods An extensive literature review was conducted to identify articles relating to CROSS method for atrophic scars from 2002 to 2018. Results The literature search yielded 19 articles meeting criteria. CROSS method has been used for the treatment of acne scars, varicella scars, enlarged pores, and depressed surgical scars. In studies using the quantile grading scale for acne scars, 60%-100% of patients showed >25% improvement. In two studies for varicella scars, 83%-100% of patients showed >25% improvement. CROSS method seems to be effective specifically for ice-pick scars. It is well tolerated and safe in Fitzpatrick skin phototypes I-V. Most reported complications are temporary and include postinflammatory dyspigmentation, erythema, pain, pruritus, infection, and widening of scars. Conclusion This literature review suggests that CROSS method is a safe and effective treatment for atrophic scars, especially ice-pick scars, in skin types I-V. However, current published works have several limitations, including small sample sizes, lack of control group, different concentrations of acid, different frequency of treatments, and follow-up periods. Larger, randomized, controlled studies are needed to elucidate the optimal treatment protocol of CROSS method.
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