The best thing to put on a pimple depends on what kind of pimple it is. A small whitehead responds well to a drying spot treatment like benzoyl peroxide or salicylic acid. A red, inflamed bump benefits more from something that calms swelling, like azelaic acid or sulfur. A deep, painful cyst under the skin often won’t respond to anything you can buy over the counter. Here’s how to match the right treatment to what’s happening on your face.
Benzoyl Peroxide for Pus-Filled Pimples
Benzoyl peroxide is one of the most effective things you can put on a pimple that has come to a head or looks like it’s forming a whitehead. It works by killing the bacteria trapped inside the pore and helping clear out the blockage. You’ll find it in concentrations from 2.5% to 10% at any drugstore. Start with 2.5% if you’ve never used it before, since higher concentrations cause more dryness and peeling without necessarily working better.
Apply a thin layer directly to the pimple after washing your face. One important warning: benzoyl peroxide bleaches fabric, so let it dry completely before touching pillowcases or towels.
Salicylic Acid for Clogged Pores
If your pimple looks like a bump under the skin without an obvious white center, salicylic acid is a better choice. It’s oil-soluble, meaning it can penetrate into the pore and dissolve the mix of dead skin and oil that’s causing the clog. Most spot treatments contain 0.5% to 2% salicylic acid. It works more slowly than benzoyl peroxide, often taking several days to flatten a bump, but it causes less irritation and peeling for most people.
Pimple Patches for Open Blemishes
Hydrocolloid pimple patches are small adhesive stickers that absorb fluid like pus and oil, helping drain pimples that have already opened. They also act as a physical barrier, protecting the spot from bacteria and preventing you from picking at it. Cleveland Clinic notes they’re most effective on open, oozing pimples, though there’s some evidence they can reduce the size and redness of closed ones too.
If you’ve popped a pimple (or it burst on its own), a hydrocolloid patch is one of the best things you can stick on it. It keeps the area moist and protected, which promotes faster healing with less scarring. You can wear them overnight or during the day under makeup.
Azelaic Acid for Red, Inflamed Bumps
When a pimple is more red and swollen than anything else, azelaic acid is worth trying. It has both antimicrobial and anti-inflammatory properties, reducing redness and irritation while also fighting the bacteria involved. It’s available over the counter in concentrations up to 10% and by prescription at higher strengths. Azelaic acid is particularly useful for people with darker skin tones because it also helps prevent the dark spots that often linger after a pimple heals.
Adapalene for Recurring Breakouts
Adapalene is a retinoid available over the counter at 0.1% strength. It speeds up skin cell turnover, which prevents pores from getting clogged in the first place. It’s not the fastest option for a single pimple that’s already there, since retinoids take weeks to show their full effect. But if you get pimples in the same areas repeatedly, applying adapalene nightly to those zones can reduce how often new ones form. Expect some dryness and flaking during the first two to four weeks as your skin adjusts.
Tea Tree Oil as a Gentler Alternative
A classic 1990 study compared 5% tea tree oil head-to-head with 5% benzoyl peroxide. Both ultimately reduced pimples, though benzoyl peroxide worked faster. The trade-off: tea tree oil caused fewer side effects like dryness and stinging. If your skin is sensitive or easily irritated, a product containing 5% tea tree oil can be a reasonable swap. Look for formulated spot treatments rather than applying undiluted essential oil, which can burn the skin.
What Not to Put on a Pimple
Toothpaste is the most common home remedy people reach for, and it’s one of the worst choices. The ingredients designed to reduce tartar and strengthen enamel are far too harsh for facial skin. Cleveland Clinic warns that toothpaste causes redness, stinging, burning, and inflammation, leaving you with a more irritated pimple than you started with. The old logic was that toothpaste contained triclosan, an antibacterial compound. But the FDA significantly limited triclosan’s use, and as of 2019, no toothpaste sold in the U.S. contains it.
Other things to skip: rubbing alcohol (strips the skin barrier and worsens inflammation), crushed aspirin paste (too acidic and unpredictable in concentration), and lemon juice (causes chemical burns and makes skin more sensitive to sunlight).
When a Pimple Is Too Deep for Topicals
Large, painful cysts that sit deep under the skin rarely respond to anything you apply on the surface. The inflammation is happening too far below the skin for creams or patches to reach effectively. A dermatologist can inject a small amount of corticosteroid directly into the cyst, which typically flattens it within two to three days. If you get deep cystic pimples regularly, that pattern usually requires a prescription treatment plan rather than spot-treating one at a time.
In the meantime, applying ice wrapped in a cloth for a few minutes at a time can reduce swelling and pain from a deep cyst while you wait for an appointment.
How to Apply Spot Treatments
The general rule is to go from thinnest product to thickest: cleanser first, then your spot treatment, then moisturizer, then sunscreen if it’s morning. If your skin is easily irritated, you can apply moisturizer first and layer the spot treatment on top. This creates a slight buffer that reduces stinging without blocking the active ingredient entirely.
Resist the urge to pile on multiple active ingredients at once. Using benzoyl peroxide and salicylic acid on the same pimple at the same time dramatically increases the chance of dryness, peeling, and irritation. Pick one and give it a few days to work before switching strategies.
Preventing Dark Spots After the Pimple Heals
Once a pimple is gone, it often leaves behind a flat dark or reddish mark called post-inflammatory hyperpigmentation. This isn’t a scar, but it can take weeks or months to fade on its own. You can speed the process with a few specific ingredients. Niacinamide (vitamin B3) and vitamin C both help fade these marks and are found in many over-the-counter serums. Alpha hydroxy acids, especially glycolic acid, speed up skin cell turnover to help the discolored layers shed faster.
Sunscreen is the single most important step during this phase. UV exposure darkens post-inflammatory marks and can make them last significantly longer. Even on overcast days, applying sunscreen to healing spots makes a measurable difference in how quickly they return to your normal skin tone.