Scientists found a protein called COL17A1 which keeps skin youthful: the protein works by encouraging cell competition, a key process to maintain tissue fitness. That effectively "drives out" weaker cells while encouraging replication of stronger ones.

See the source article by following the link below:
Scientists found a protein called COL17A1 which keeps skin youthful: the protein works by encouraging cell competition, a key process to maintain tissue fitness. That effectively "drives out" weaker cells while encouraging replication of stronger ones.