There are physical signs that show that an individual is ageing. A man for instance may lose hair or slowly change to grey. Our skin shows signs also and to know it, we've to understand what wrinkles are.
The skin is made up of 3 layers namely the epidermis, the dermis and subcutaneous tissue. The outer layer namely the epidermis becomes thinner and fewer sticky as we age. This successively causes dryness and as this decreases by 10%...