Skin is the human body,s largest organ .human skin is approximately two millimeters in thickness . The outer layer of the skin is known as epidermis. It is found the thickest on the palms of the hand and soles of the feet.Every minutes of the day we lose about 30,000 to 40,000 dead skin cells off the surface of our skin . 

■ As  people age , skin cells divided more slowly, and the middle layer of the skin , called the dermis, begins to thin. 

■ The dermis is composed of a network of elastin and collagen fibers , which offer support and elasticity.

■ As this network lossen and unravels with time , depression area created on the skin surface .

■ Aging skin is also less able to retain moisture, lees efficient in secreting oil , and slower to heal .

■ All these factors contribute to development of wrinkles.