What Is Acne Cosmetica and Which Products Cause It
Acne cosmetica is a specific form of acne triggered by cosmetic and skincare products that clog pores, resulting in small, persistent bumps — typically…
What Causes Acne After Switching Birth Control Pills
Switching birth control pills causes acne primarily through androgen rebound — when you move away from a combination pill containing estrogen, your…
Why Stopping Birth Control Causes an Acne Flare
Stopping birth control causes an acne flare because your body experiences a sudden surge of androgens — male sex hormones like testosterone and DHT —…
Why Insulin Resistance Causes Acne
Insulin resistance causes acne by triggering a hormonal cascade that increases sebum production, accelerates skin cell turnover, and promotes chronic…
What Causes Acne in People With PCOS
Acne in people with polycystic ovary syndrome stems primarily from excess androgens — male hormones like testosterone and DHEA-S that are produced at…
What Causes Acne in Women Going Through Perimenopause
Perimenopausal acne in women is primarily caused by shifting hormone levels — specifically, declining estrogen paired with relatively stable or even…
What Causes Acne After Flying on a Plane
Flying on a plane causes acne primarily because of the extremely low humidity inside aircraft cabins, which typically hovers around 10 to 20 percent — far…
What Causes Acne Flares in Summer Heat
Summer acne flares are driven by a straightforward biological chain reaction: rising temperatures and humidity push your sebaceous glands into overdrive,…
What Causes Butt Acne — Is It Really Acne
Most of what people call “butt acne” is not actually acne at all. The bumps, pustules, and irritation that show up on your backside are usually…
What Causes Acne on the Scalp
Scalp acne is caused by the same fundamental process that triggers acne anywhere else on the body: hair follicles become clogged with a combination of…