Toothpaste does not help with blackheads, and applying it to your skin will likely make things worse. The idea dates back to when toothpaste contained an antibacterial compound called triclosan, which some people believed could fight acne. But the FDA significantly limited triclosan’s use in 2017, and as of 2019, no toothpaste sold in the U.S. contains it. The original logic behind this home remedy no longer applies.
Why Toothpaste Doesn’t Work on Blackheads
Blackheads form when a pore gets clogged with a plug of oil and dead skin cells. That plug sits at the surface, where exposure to air oxidizes it and turns it dark. Clearing a blackhead requires dissolving or loosening that plug so oil can flow freely again.
Toothpaste can’t do this. Its ingredients are designed to reduce tartar buildup, strengthen enamel, and clean teeth. Nothing in that formula dissolves the mix of oil and dead skin trapped inside a pore. At best, toothpaste might temporarily dry out the skin around a blackhead, giving the illusion that something is happening. But the clog itself stays put.
How Toothpaste Can Damage Your Skin
Toothpaste has a pH that typically ranges from 7 to 10, which is alkaline. Healthy skin sits around 4.5 to 5.5 on the pH scale, slightly acidic. That acid mantle protects against bacteria and helps maintain the skin’s natural balance. Smearing an alkaline paste over your face disrupts that protective layer, leaving skin more vulnerable to irritation and breakouts.
Beyond pH, toothpaste contains ingredients that are simply too harsh for facial skin. Dermatologists at the Cleveland Clinic warn that toothpaste “will likely do more harm than good,” leaving you with redness, stinging, and a more irritated area than you started with. Some people develop allergic contact reactions, with symptoms including itchy, painful rashes, dry and fissured skin, and swelling. These reactions can linger well after you wash the toothpaste off.
What You Might Actually Be Seeing
Before treating what you think are blackheads, it’s worth checking whether they’re actually sebaceous filaments. These are a normal part of how your skin moves oil to its surface, and almost everyone has them, especially on the nose and chin. They look similar to blackheads but are typically smaller, flatter, and lighter in color (gray, light brown, or yellowish rather than dark black).
The key difference: blackheads have a plug that blocks the pore, while sebaceous filaments don’t. If you squeeze a sebaceous filament, a thin, waxy thread comes out, but it refills within about 30 days because your skin is functioning normally. No treatment will permanently eliminate sebaceous filaments, and trying to scrub them away with toothpaste or harsh products just irritates your skin for no lasting benefit.
What Actually Works for Blackheads
Drugstore products designed for skin cost about the same as a tube of toothpaste and contain ingredients that are proven to clear clogged pores. Here are the three most effective options:
- Salicylic acid: This is the go-to recommendation from dermatologists for blackheads. It’s oil-soluble, meaning it can penetrate into the pore and dissolve the plug of oil and dead skin from the inside. Start with a cleanser, toner, or medicated pad containing 2% to 4% salicylic acid once a day. If your skin feels too dry, drop to a lower concentration.
- Glycolic acid: This works on the skin’s surface, loosening the bonds between dead skin cells so they shed more easily instead of accumulating in pores. Look for a cleanser with around 10% glycolic acid.
- Retinoids: These speed up skin cell turnover, preventing dead cells from piling up and clogging pores in the first place. Over-the-counter options containing adapalene are widely available and effective for persistent blackheads. Prescription-strength versions exist for more stubborn cases.
Of these three, salicylic acid is the easiest starting point. It’s gentle enough for daily use, available in dozens of affordable products, and specifically targets the type of clog that creates blackheads. You can find it in face washes, leave-on treatments, and pre-soaked pads.
A Better Daily Routine
Blackheads are persistent because the conditions that create them (oil production, dead skin cell buildup) are ongoing. A single spot treatment won’t prevent new ones from forming. The most effective approach is a consistent daily routine rather than a one-time fix.
Washing your face twice a day with a gentle cleanser keeps excess oil from accumulating. Adding a salicylic acid product once daily gives your pores ongoing help staying clear. If you layer on a lightweight, oil-free moisturizer afterward, you avoid the rebound effect where dried-out skin overproduces oil to compensate, which can actually trigger more blackheads.
Resist the urge to squeeze. Squeezing pushes bacteria deeper into the pore, risks scarring, and often triggers inflammation that turns a simple blackhead into a red, swollen pimple. If you have blackheads that don’t respond to over-the-counter products after 6 to 8 weeks of consistent use, a dermatologist can prescribe stronger retinoids or perform extractions safely.