I cannot say for certain that the modest mustache that Joc Pederson has been working on is the source of his power, but there is absolutely a correlation in timing.
In all seriousness, Pederson was clearly getting his timing right after his earlier IL stint, ripping singles left and right, so the power was likely to come along eventually. Thus, he homered again for the second time in the last four games:
The greatest @MLB mustaches of all time:
13. It's
12. Not
11. A
10. Competition
9. They
8. Are
7. All
6. Amazing
5. In
4. Their
3. Own
2. Way
1. Joc Pederson pic.twitter.com/NtupZ6mUpI— Chicago Cubs (@Cubs) May 25, 2021
Stache mash. pic.twitter.com/O54roBqenS
— Corey Freedman (@CFCubsRelated) May 25, 2021