Leprosy does not make skin parts to fall off but leads to loss of sensation in such areas.
This doesn't make sense. Fall off? Fall down? Fall from grace? So I'll take a stab ... Yes the skin can fall. Probably. Regards Tony E
Because it is constantly producing more skin cells
The outer layer of skin does not grow with the snake and periodically the snake must shed its older skin so as to be able to grow. The skin does not simply fall off, it must be removed by the snake.
why do geckos tail fall off
Yes. The outside layer is dead, but when they fall off, it's replaced by the skin underneath it.
Your skin changes over time. Skin cells die, and fall off. When this happens the marks come off with it! so it is permanent but that does it!
If left alone - when the skin has healed underneath it.
Well than you stretch it and your skin may slowly fall off .
If the dry skin is on your heels, you can use a pumice stone. Otherwise, use a moisturizer, in order to allow soothing of the underlying skin, while the dry skin gradually works its way off.
to strengthen and reproduce in a process called keratinzation
Neosporine ointment or neosporine cream. The skin will scab and fall off like a wound would.