Exfoliation

n.

1.

The scaling off of a bone, a rock, or a mineral, etc.; the state of being exfoliated.

Noun	1.	exfoliation - the peeling off in flakes or scales of bark or dead skin; "exfoliation is increased by sunburn"
	2.	exfoliation - a thin flake of dead epidermis shed from the surface of the skin Synonyms: scurf, scale

exfoliate, organic phenomenon