decrease of the sebaceous secretion contributes also to the xerosis and following disturbances have been registered : decrease of the total excretion rate , decrease of the lipids of sebo-glandular origin such as waxes , squalen and triglycerides , higher amount of cholesterol , decrease of surfaces and density of sebaceous glands and lower labelling of cells in s phase .
C0023779
lipids
C0043076
waxes