quality:corruption
Approved topical medicine

In the European Union, a prescription gel containing birch bark extract (commercial name Episalvan, betulae cortex dry extract (5-10 : 1); extraction solvent: n -heptane 95% (w/w)) was approved in 2016 for the topical treatment of minor skin wounds in adults. Although its mechanism of action in helping to heal injured skin is not fully understood, birch bark extract appears to stimulate the growth of keratinocytes which then fill the wound.