A person’s genetics determine their skin type (normal, dry, oily or combination) and effect their overall skin condition.
Genetics and biological skin aging
Genetics also determine the biological aging of skin which is characterized by:
- A decline in cell regeneration and renewal.
- Reduced sebaceous and sweat gland secretions.
- Degeneration of the connective tissue so that skin is less able to bind in water and loses firmness.
- Degeneration of elastic fibers that results in reduced skin elasticity.
Biological skin aging should not be confused with premature skin aging which is caused by external factors such as the sun and can be influenced.
A predisposition to skin conditions such as Atopic Dermatitis, Psoriasis and Ichthyosis is also decided by genetics. For example, those born with a genetic Filaggrin (a protein found in skin) deficiency have skin with a weaker barrier function and are prone to sensitive skin and Atopic Dermatitis. With such a predisposition, skin can be triggered more easily by stress and exacerbated by external influences, so it’s important to have a proper skin care routine in place. Read more in dry skin and Atopic Dermatitis.
There are also some diseases – such as diabetes and kidney disorders – that can impact on skin condition.