All of the following are causes of wrinkles except
a. thinning of the epidermal layer.
b. collagen fibers losing flexibility.
c. elastin fibers keeping skin more stretched.
d. losing the underlying layer of fat.
Question 2
Which of the following is a sign of aging that is not readily apparent?
a. age spots
b. increased blood pressure
c. redistribution of body fat
d. wrinkles