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Skincare.
The skin is the outer covering of the body. In humans, it is the
largest organ of the integumentary system made up of multiple layers of
mesodermal tissue, and guards the underlying muscles, bones, ligaments and
internal organs. Skin of a different nature exists in amphibians, reptiles,
birds. Human skin is not unlike that of most other mammals except that it is
not protected by a pelt and appears hairless though in fact nearly all human
skin is covered with hair follicles. The adjective cutaneous literally means "of
the skin" (from Latin cutis, skin).
Because it interfaces with the environment, skin plays a key role in protecting
(the body) against pathogens and excessive water loss. Its other functions
are insulation, temperature regulation, sensation, synthesis of vitamin D, and
the protection of vitamin B folates. Severely damaged skin will try to heal by
forming scar tissue. This is often discolored and depigmented.
In humans, skin pigmentation varies among populations, and skin type can range
from dry to oily. Such skin variety provides a rich and diverse habit for
bacteria which number roughly a 1000 species