What about this?
https://news.uci.edu/2017/07/11/uci...lation-of-hair-growth-across-the-entire-body/
Irvine, Calif., July 11, 2017 — To paraphrase the classic poem, no hair is an island entire of itself.
Instead, University of California, Irvine scientists have discovered that all hairs can communicate with each other and grow in coordination across the entire body. This is regulated by a single molecular mechanism that adjusts by skin region to ensure efficient hair growth – so no bald patches form – and enable distinct hair densities in different body areas.
https://news.uci.edu/2017/07/11/uci...lation-of-hair-growth-across-the-entire-body/
Irvine, Calif., July 11, 2017 — To paraphrase the classic poem, no hair is an island entire of itself.
Instead, University of California, Irvine scientists have discovered that all hairs can communicate with each other and grow in coordination across the entire body. This is regulated by a single molecular mechanism that adjusts by skin region to ensure efficient hair growth – so no bald patches form – and enable distinct hair densities in different body areas.