Does smoking cause pimples?

In general, smoking may increase the risk of developing acne.

Nicotine in cigarettes causes blood vessels to constrict, reducing blood supply to the skin. This deprives skin cells of adequate oxygen and nutrients, slows down metabolism, and weakens the skin's ability to repair and renew itself. Old keratinocytes (dead skin cells) cannot shed in a timely manner, making it easier to clog hair follicles and creating conditions favorable for acne development. Harmful substances in cigarette smoke can interfere with the endocrine system, stimulating the sebaceous glands to produce more oil. Excess oil combines with keratinocytes, further blocking follicles, forming comedones, and eventually leading to acne.

As an unhealthy habit, smoking may negatively affect skin health. Harmful substances in tobacco, such as nicotine and tar, can impact the skin's metabolism and repair functions through the bloodstream after entering the body, reducing skin immunity and making it more susceptible to bacterial infection and inflammatory responses.

Quitting smoking can positively improve skin condition and reduce acne occurrence. At the same time, maintaining good lifestyle habits, such as balanced nutrition, sufficient sleep, and moderate exercise, can help maintain healthy skin. If acne is severe, it is recommended to consult a dermatologist for professional diagnosis and treatment advice.