Blackheads cluster around your lips because this area has an unusually high density of oil glands, many of which open directly onto the skin’s surface rather than being attached to hair follicles. That combination of abundant oil production and constant exposure to lip products, food residue, and toothpaste makes the skin surrounding your mouth especially prone to clogged pores.
Why the Lip Area Is a Hotspot for Blackheads
Most oil glands on your body sit inside hair follicles, but the corners of the mouth, the lip border, and the adjacent skin are different. Here, oil glands exist independently of hair, opening directly onto the surface. These glands range from 0.2 to 2.0 mm in diameter and continuously produce sebum to keep the skin soft and hydrated. The problem is that the lip border sits at a transition zone between regular facial skin and the thinner, more sensitive tissue of the lips themselves. Pores in this transition zone are small, so even a modest increase in oil or a thin film of product residue can be enough to form a plug.
On top of that, the perioral area (the skin ringing your mouth) gets touched constantly. You eat, drink, lick your lips, wipe your mouth, and apply products to it more than almost any other part of your face. Each of those actions deposits or traps material that can mix with sebum inside a pore, forming the plug that oxidizes and turns dark: a blackhead.
Lip Products That Clog Pores
Lip balms, glosses, and lipsticks are designed to coat and seal moisture in, which is exactly why they can cause trouble. Thick, occlusive ingredients form a barrier over the skin surrounding your lips, not just on them. Some of the most common pore-clogging culprits include lanolin and its derivatives, coconut oil, cocoa butter, and isopropyl myristate. Petrolatum and mineral oil can also trap debris against the skin if they migrate beyond the lip line.
You don’t necessarily need to stop using lip balm altogether. Instead, check the ingredient list. If any of the ingredients above appear near the top (meaning they make up a larger proportion of the formula), that product is more likely contributing to your blackheads. Lighter, non-comedogenic balms exist, and switching to one is often the simplest fix people overlook.
Hormones and Oil Production
Androgens, a group of hormones that includes testosterone, directly control how much oil your skin produces. They enlarge oil glands and ramp up their output, particularly in facial skin cells. This is why blackheads around the mouth often worsen during puberty, before a menstrual period, during pregnancy, or after stopping hormonal birth control. All of these situations involve shifting androgen levels.
The mechanism works in layers. Androgens stimulate oil-producing cells to multiply and also increase the amount of fat those cells generate. They may amplify the activity of growth factors that regulate oil gland development, creating a feedback loop: more hormone activity leads to bigger glands producing more sebum. For people whose perioral breakouts follow a cyclical, hormonal pattern, topical treatments alone sometimes aren’t enough. Hormonal contraceptives or anti-androgen medications can reduce sebum production at the source, which is why these breakouts sometimes clear up on their own when hormonal shifts stabilize.
Toothpaste Residue Matters More Than You Think
Toothpaste commonly contains sodium lauryl sulfate (SLS), a foaming agent that strips oils from your skin and can irritate the delicate perioral area. Fluoride in toothpaste is another known irritant for some people. When you brush your teeth, a thin layer of toothpaste inevitably coats the skin around your lips. If you wash your face before brushing, that residue sits on clean skin for the rest of the night, potentially irritating pores and contributing to blockages.
A simple fix: brush your teeth first, then wash your face. That way, your cleanser removes any toothpaste residue left on your skin. It’s a small change in routine order that can make a noticeable difference over a few weeks.
How to Clean This Area Effectively
Regular cleansing sometimes isn’t thorough enough to dissolve waxy lip products and sunscreen from the perioral zone. A two-step cleansing approach works well here. Start with an oil-based cleanser (a cleansing balm or oil) to break down oily residue like lip product, sunscreen, and excess sebum. Follow with a water-based gel or foam cleanser to clear away sweat, dirt, and whatever the oil cleanser lifted from your pores.
You don’t need to double cleanse every day. Reserve it for evenings when you’ve worn lip products, heavy sunscreen, or makeup. On lighter days, a single gentle cleanser is fine. The key is paying deliberate attention to the skin around your mouth rather than treating it as an afterthought while washing the rest of your face.
Treating Blackheads Near Your Lips Safely
Salicylic acid is the go-to ingredient for blackheads because it’s oil-soluble, meaning it can penetrate into clogged pores and dissolve the plug from inside. However, using it near your lips requires care. The Mayo Clinic warns that salicylic acid should be kept away from mucous membranes, including the mouth. If it gets on your lips or inside your mouth, rinse immediately with water for 15 minutes.
In practice, this means applying a salicylic acid cleanser or leave-on treatment carefully to the skin around your lips without letting it touch the lip tissue itself. A cotton swab gives you more precision than your fingertips. Products with 0.5% to 2% salicylic acid are widely available over the counter and effective for surface-level blackheads. Start with a lower concentration if you haven’t used it before, since perioral skin tends to be more reactive than, say, your forehead or nose.
Retinoids are another option. They increase skin cell turnover, preventing dead cells from accumulating inside pores in the first place. The same caution applies: keep retinoid products off the lip line and vermilion border, and use a small amount to minimize irritation on this thinner skin.
When It Might Not Be Blackheads
A condition called perioral dermatitis looks similar at first glance but behaves very differently. It causes small, red, sometimes pus-filled bumps that cluster around the mouth, typically starting near the nasolabial folds (the creases running from your nose to the corners of your mouth). One reliable way to tell them apart: perioral dermatitis does not produce blackheads. If you see open comedones (the dark-topped plugs characteristic of blackheads), you’re dealing with acne. If the bumps are red, slightly scaly, possibly burning or itchy, and there’s a clear zone of normal skin right at the lip border, perioral dermatitis is more likely.
This distinction matters because the treatments are different. Perioral dermatitis often worsens with the same heavy creams and occlusive products that trigger it. Topical steroids, which many people reach for when they see a rash, can also make perioral dermatitis significantly worse. If your bumps don’t look or feel like classic blackheads, getting the right diagnosis changes everything about how you treat them.
Habits That Reduce Perioral Blackheads
- Brush teeth before washing your face to clear toothpaste residue from the skin around your lips.
- Switch lip products if they contain lanolin, coconut oil, cocoa butter, or isopropyl myristate high on the ingredient list.
- Apply lip balm precisely on the lips only, avoiding the surrounding skin.
- Wipe your mouth after eating with a clean cloth or napkin to remove food oils and grease that settle into pores.
- Avoid touching the area throughout the day, since your fingers transfer oils and bacteria to an already vulnerable zone.
- Use non-comedogenic sunscreen around the mouth, and remove it thoroughly in the evening.
Most people see improvement within four to six weeks of adjusting their routine, since that’s roughly how long it takes for a pore to cycle through the clogging process. If blackheads persist after consistent changes, the hormonal component is worth exploring with a healthcare provider.