Why do my fingernail cuticles constantly crack and bleed during the dry winter?
1. Introduction Fingernail cuticles constantly crack and bleed during the dry winter months due to a severe depletion of the skin barrier lipids caused by low environmental humidity and cold temperatures. This rapid moisture loss, scientifically known as transepidermal water loss, leads to the dehydration and mechanical failure of the stratum corneum in the periungual … Read more