How a wrinkle is formed ?
Why do we age ? 
The body and ageing

As the years go by, we notice changes in the nature of our epidermis: the functions of the cellular system are disturbed and cellular renewal slows down.

he skin only needs to be poorly moisturised for it to dry out and become lined. In other words, the appearance of wrinkles and loss of firmness.


Wrinkles and fine lines are the most easily visible signs resulting from the obstacle course the skin has to face. Helped along by the sagging of the tissues, these wrinkles and lines result in the formation of a type of canvas covered with cracks of varying depths.

As time goes by, they deepen, reaching the dermis, which is the skin’s supporting mattress. When the dermis loses its elasticity, it becomes slack and deeper wrinkles begin to form. These wrinkles are more than 0.05 millimetres in depth, therefore they are the longest and widest.
 
Wrinkles grade developed by the Laboratoires Vichy
Class 1
very few wrinkles
Class 2
few wrinkles
Class 3
somewhat noticeable wrinkles
Class 4
noticeable wrinkles
Class 5
very noticeable wrinkles
Class 6
pronounced wrinkles
The Vichy Dermatologist's advice
to each age, its wrinkles
the different types of wrinkles