Another benefit of horse chestnut that’s been a feature of preliminary research is its ability to help wounds heal. While no human studies have yet been conducted, a 2006 lab study found that horse chestnut extract can help induce contraction forces in fibroblasts, cells integral to the wound healing process. When these fibroblasts contract, they potentially induce faster wound healing. Again, this research is not conclusive and may not function as expected in humans, but these results are promising.