Darkened or pigmented lips, often a side effect of chronic smoking, are a common cosmetic concern known as smoker's melanosis. The constant exposure to nicotine, tar, and the heat from cigarettes triggers the skin cells (melanocytes) to produce excess melanin, the pigment responsible for skin color, leading to a noticeable darkening, which can range from brown to purplish-black hues. For those looking to restore their lips to a lighter, healthier tone, understanding the cause is the first step toward effective dark lip treatment . Understanding the Culprit: Why Smoking Darkens Lips The discoloration in smokers’ lips is primarily driven by three mechanisms: Melanin Overproduction: Chemicals in tobacco smoke, particularly polycyclic amines like nicotine, stimulate melanocytes as a defensive measure. This increased melanin production is a protective response to the toxins and heat, resulting in hyperpigmentation. Reduced Oxygen and Circulation: Carbon monoxide ...
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