Is acne necessarily related to oily skin?
Oily skin and acne always seem to be related: there can be no pimples without excess sebum. But contrary to popular belief, acne-prone skin is also easily weakened.
The reason for this is simple: acne-prone skin is naturally dehydrated. This biological reality is too often forgotten in the fight against blemishes.
The dysseborrhoea characteristic of acne often weakens the skin barrier, and the skin becomes dehydrated, particularly in severe acne. In this case, there is a double penalty of sensitivity + pimples with a very particular profile. This biological process by which acne-prone skin is weakened is exacerbated by certain types of acne treatments.
Is acne hereditary?
It is commonly believed that acne has a genetic component and that there is a familial predisposition. Sociological studies seem to confirm this idea, with an increased likelihood of inheriting acne from the mother for young girls under the age of 20 and for women aged 25 to 40 who have acne*.
Even though 46%* of adolescents between the ages of 12 and 19 confirm a family history of acne, there is currently no scientifically established genetic link.
*Arcane Research – February 2017
Why are teenagers more prone to acne?
This is the excess production of sebum resulting from hormonal activity triggered during puberty. The skin secretes very little sebum during childhood. The sebaceous glands become more active during puberty, when male sex hormones (androgens) start working, in girls as well as in boys. In most cases, excess sebum is then observed until the hormonal balance is restored. The skin becomes oily and shiny, but this hyperseborrhoea alone cannot explain why acne occurs: some people have oily skin but no pimples!
What is the link between acne and skin sensitivity?
We know that dysseborrhoea plays a significant role in the formation of blemishes. However, it is also responsible for the dehydration of acne-prone skin.
Indeed, oxidation of the skin’s lipids modifies its structure and leaves it more permeable. The altered sebum composition of acne patients causes transepidermal water loss (TEWL) to increase, which is why acne-prone skin can be naturally dehydrated.
The skin becomes sensitive and has a hard time tolerating topical and systemic acne treatments. Typical signs of dry and sensitive skin then appear, including redness, irritation, scales and itching.