<p>Botulinum toxin type A is extensively used to treat facial wrinkles and facial asymmetries, with its aesthetic and functional objectives being of interest to many patients. In some situations, although its adverse effects are rare, botulinum toxin can result in undesirable results, depending on the purpose and application technique. On this subject, botulinum toxin reversal is poorly documented in the scientific literature and there are few reports of this process. This article aims to report the possible reversal of the effects of botulinum toxin through photobiomodulation (low-level laser therapy), especially when there is patient dissatisfaction.</p><p><i>Level of Evidence III</i> This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors <a href="http://www.springer.com/00266">www.springer.com/00266</a>.</p>