Microneedling creates tiny skin injuries that boost collagen and elastin production, enhancing skin health.
The study compared how well physical vs. physical-chemical sunscreens penetrate the skin and react after microneedling, involving 30 volunteers and various techniques.
Results showed physical-chemical sunscreen penetrated deeper than physical sunscreen, but both types did not cause negative skin reactions post-treatment, indicating physical sunscreen is safe to use after microneedling.