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Summary

Wrinkles appear little by little and betray the progression of a slow, complex and deep process. These phenomena take place in both the epidermis, the skin’s natural barrier and the dermis.

A loss of elasticity

As time passes, the body gets tired. Cells renew themselves less quickly and the production of certain molecules becomes less intense. This includes:

  • Collagen molecules which ensure the firmness of the skin
  • Elastin molecules which give skin its elasticity.

The sebaceous glands which manufacture sebum also see their rate of production drop off: the skin grows thinner and dehydrates.

A change from natural grooves to wrinkles

The skin is not a smooth and regular surface. Under a microscope, it shows grooves of various sizes as well as ‘plateaus’. The whole forms a sort of grid network.

With age, the depth of the large grooves is accentuated whereas the smaller grooves diminish until they disappear. These phenomena disrupt the established grid, causing the loss of firmness and elasticity of the skin and giving rise to wrinkles which this time can be seen with the naked eye

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