Changes within the skin’s layers show themselves on the surface as signs of ageing.
A slower cell turnover and reduction in sebum production on the skins surface means roughness and dryness are more likely. As this particular layer of the skin ages, it becomes more sensitive to UV light. The skin is less efficient at healing itself, and a reduction in immune function can lead to an increase in skin infections, together with slower wound healing.
From the age of 25, there is a 1% annual decrease in collagen, one of the ‘building blocks’ of the skin. Together with a decline in elastin this leads to dermal tissue disorganisation. Skin structure is compromised, and fine lines and wrinkles are more likely. As our skin matures, elasticity continues to reduce and deeper wrinkles form. The production of Hyaluronic Acid – plentiful in youthful skin – slows down, so skin cells are less effective at binding in water and it becomes drier. It also becomes weaker and more prone to damage and broken capillaries. Reduced micro-circulation means a less efficient delivery of nutrition and oxygen to the surface, which leads to a decrease of the rosy glow enjoyed by youthful skin.
In the deeper layers, the most notable changes are to the size and number of lipid-storing cells in the adipose layer. This decrease has a knock-on effect on loss of volume, and can lead to deep wrinkles, hollow cheeks and impaired wound healing.