Acne and hormonal imbalances
Hormonal changes that occur during adolescence, menstruation or pregnancy can stimulate excess sebum production and encourage the appearance of skin imperfections (blackheads, open comedones or microcysts beneath the skin). You may notice acne spots on your forehead and temples, as well as excess oil, which is common in the area between the eyebrows.
In some cases, taking hormonal contraception may also trigger blemishes. Do not hesitate to speak to your healthcare professional, who can help you review your contraception and find the most suitable option for you.
Stress
By placing the body in a constant state of alert, stress can disrupt hormonal balance. In particular, the adrenal glands may produce excess cortisol, which contributes to hormonal imbalance and inflammation. This imbalance and inflammation can trigger stress-related spots on the face or body, especially on the forehead. Sebum production may also increase, which can worsen existing acne.
Hygiene & lifestyle habits
When you hold your mobile phone against your temples, your skin comes into contact with thousands of bacteria that can trigger spots. That’s why it’s important to disinfect your phone regularly. At work, many of us touch our faces without thinking, scratch our foreheads or simply rest our hands on them while concentrating — often with hands that aren’t always clean. This habit can encourage bacterial growth and lead to the appearance of blemishes. Other habits, such as wearing a tight-fitting cap or cycling helmet every day without washing it regularly, can also promote the formation of blackheads and comedones. Finally, very thick fringes may contribute to the appearance of spots on the forehead by stimulating the sebaceous glands and preventing the skin from breathing properly.
Unsuitable cosmetic products
Using irritating cosmetics, poor-quality products, occlusive make-up (particularly those containing mineral oils) or expired make-up can encourage spots to appear on the forehead.
You may also notice breakouts along the sides of the nose, on the cheeks, the chin or on any area where unsuitable skincare or make-up products have been applied.
Air pollution
If you live in a highly polluted urban environment, poor air quality may be one of the causes of pimples on your forehead. Air pollution with fine particles alters the skin barrier and weakens it. Pollution causes inflammatory acne by altering squalene, a lipid found in the skin's sebum. The result? Sebum accumulates on the surface of the epidermis, pores dilate, and blackheads and closed comedones form.










