First things first, a short lesson in biology. As we explained earlier – the nail plate consists of keratin cells, which are stacked on top of each other in approximately 50 layers. Water gets between and through them, and with it other elements to which we expose our nails.
However, the keratin that makes up our nails is a naturally dry, hard protein. For this reason, the body naturally supplies the nails with bodily oil from the nail bed to keep them flexible.