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[:en]Fig.6. Remodeling of an old atrophic scar to normotrophic after TCA peeling
Glycolic acid peels with 50-70% AHA are usually made after a month-long preparation. Prior to the AHA exfoliation treatment, a cream containing tretinoic or glycolic acid is applied within one month. But still, the result is unsatisfactory. TCA peeling (trichloroacetic acid) penetrate deeper than AHA, so it gives better results (Fig. 5).[:]