Lines and furrows and wrinkles clinically called rhytides – are typical of an ageing skin and are attributed to the irregular thickening of the dermis coupled with the decrease in the amount of water held by the epidermis.
Genetic tendency, skin phototype, exposure to environmental conditions and lifestyle choices are some of the factors that can affect the degree of severity of these seemingly alarming changes in a persons appearance.
Aside from natural ageing processes, the following factors appear to be most common culprits while it should be noted that some reasons are simply unavoidable: sun damage, muscle movement, gravity, surgery, injury, acne, discoid lupus (skin diseases with a tendency to scar), smoking and exposure to environmental toxins such smog and dust.
With lines, there is often a degree of irregularity and asymmetry, as people tend to smile, smirk or frown more on one side than the other, or as preference to sleep on the right or the left cheek.
Furrows are actually deeper lines and clinically classified as either dynamic or static. Dynamic lines appear with movement of the facial muscles. Eventually however dynamic...