How to Treat Fungal Acne (Malassezia Folliculitis)

Fungal acne is not acne. It looks like acne, it acts like acne, and it shows up in the same places as acne. But it is caused by an entirely different organism, which is why traditional acne treatments do not work on it and often make it worse.

If you have been treating stubborn breakouts for months with no improvement, or if your "acne" gets worse when you use rich moisturizers, fungal acne might be the actual problem.

What Is Fungal Acne?

The clinical name is Malassezia folliculitis. It is caused by an overgrowth of Malassezia yeast, a type of fungus that naturally lives on everyone's skin. In small amounts, it is harmless. When conditions allow it to multiply, it infects hair follicles and causes inflamed, itchy bumps that look nearly identical to closed comedones or small pimples.

The key difference: Malassezia feeds on oil. Specifically, it feeds on fatty acids with carbon chain lengths of 11 to 24. Most skincare products contain these fatty acids in the form of oils, esters, and emollients. This means most conventional skincare products are literally feeding the fungus.

How to Tell If It Is Fungal Acne

Fungal acne has a few distinguishing characteristics:

Appearance

• Small, uniform bumps roughly the same size (unlike regular acne, which varies)
• Typically flesh-colored or slightly red
• Often clustered in groups
• Rarely forms large cysts or deep nodules

Location

• Forehead (the most common site)
• Chest and upper back
• Jawline and cheeks
• Shoulders and upper arms

Sensation

• Itchy. This is the biggest giveaway. Regular acne is painful or sore. Fungal acne itches.
• Bumps may feel slightly raised but are not tender to the touch

Triggers

• Hot, humid weather
• Sweating heavily during exercise
• Wearing tight, non-breathable clothing
• Taking antibiotics (which kill bacteria but allow yeast to flourish)
• Using heavy, oil-rich skincare products

If your breakouts are uniform in size, located on the forehead or chest, itchy rather than painful, and resistant to standard acne treatments, there is a strong chance it is fungal.

Antifungal Ingredients That Work

Since Malassezia is a fungus, you need antifungal ingredients to treat it. Here are the most effective options.

Zinc Pyrithione

Found in dandruff shampoos like Head and Shoulders. It kills Malassezia on contact. Many people use dandruff shampoo as a short-contact mask on affected areas for 5 to 10 minutes before rinsing. It sounds strange, but it is one of the most effective treatments.

Ketoconazole

Available as Nizoral shampoo (2% over the counter) or as a prescription cream. Ketoconazole is a potent antifungal that directly targets Malassezia. Use it as a 5-minute mask on affected skin, then rinse.

Sulfur

Sulfur has both antifungal and antibacterial properties. Sulfur masks and spot treatments are fungal-safe and help reduce the yeast population without stripping the skin.

Salicylic Acid

Salicylic acid is not antifungal, but it helps by penetrating into follicles and clearing the dead skin cells and oil that Malassezia feeds on. It also helps with the appearance of bumps. Check the recommended wait times when using salicylic acid in your routine.

Azelaic Acid

Azelaic acid has mild antifungal properties and is excellent at reducing inflammation and post-inflammatory hyperpigmentation. It is one of the few actives that is both fungal-safe and effective at addressing the aftermath of fungal acne.

Products and Ingredients to Avoid

This is where treating fungal acne gets tricky. You need to eliminate anything that feeds Malassezia, which means scrutinizing ingredient lists more carefully than usual.

Oils to Avoid

Most plant oils contain the fatty acids Malassezia thrives on:

• Coconut oil
• Olive oil
• Jojoba oil (technically a wax ester, but still problematic)
• Sweet almond oil
• Argan oil
• Marula oil
• Rosehip oil

Esters to Avoid

• Isopropyl palmitate
• Isopropyl myristate
• Glyceryl stearate
• Polysorbate (60, 80)
• Sorbitan oleate

Fatty Acids to Avoid

• Stearic acid
• Oleic acid
• Palmitic acid
• Lauric acid
• Myristic acid
• Linoleic acid (in high concentrations)

Fermented Ingredients to Avoid

Fermentation produces byproducts that Malassezia can feed on:

• Galactomyces ferment filtrate
• Saccharomyces ferment filtrate
• Bifida ferment lysate

This rules out many popular K-beauty essences and fermented products.

Fungal-Safe Skincare Routine

Building a routine around fungal acne means choosing products with short, simple ingredient lists free of Malassezia-feeding compounds. Here is what a safe routine looks like.

Morning

Step 1: Gentle cleanser. Use a simple, fungal-safe gel or cream cleanser. Avoid cleansing oils and balms, which contain problematic fatty acids.

Step 2: Antifungal treatment (optional). If actively treating fungal acne, apply a thin layer of an antifungal cream or use a zinc pyrithione or ketoconazole shampoo as a short-contact mask. Leave on for 5 minutes, then rinse.

Step 3: Lightweight, fungal-safe moisturizer. Look for moisturizers based on glycerin, hyaluronic acid, squalane (derived from olives but is a safe hydrocarbon, not an ester), or aloe vera. Avoid anything with fatty alcohols or heavy oils.

Step 4: Mineral sunscreen. Zinc oxide-based sunscreens are ideal. Zinc oxide has mild antifungal properties of its own, which is a bonus. Avoid sunscreens with heavy emollients. For proper absorption, follow the sunscreen wait time guidelines.

Evening

Step 1: Cleanser. Same gentle cleanser. If you wore heavy sunscreen, do a modified double cleanse using micellar water first instead of a cleansing oil.

Step 2: Active treatment. Alternate between:

• Salicylic acid (2 to 3 times per week) to clear follicles
• Azelaic acid (2 to 3 times per week) for inflammation and dark marks
• Sulfur mask (once a week) for deeper antifungal action

Step 3: Moisturizer. Same lightweight, fungal-safe formula as morning.

The proper layering order still applies here. Treatments go on before moisturizer, and you should give each product time to absorb.

Squalane: The Safe Oil

Squalane deserves special mention because it is one of the few oils that Malassezia cannot feed on. It is a hydrocarbon, not a fatty acid or ester, which makes it invisible to the yeast. Squalane is lightweight, non-comedogenic, absorbs quickly, and provides excellent moisture without triggering fungal acne.

If your fungal-safe moisturizer is not hydrating enough, adding a few drops of pure squalane oil is a safe way to boost moisture.

How Long Does Treatment Take?

Most people see visible improvement within 1 to 2 weeks of consistent antifungal treatment combined with eliminating triggering products. Complete clearing can take 4 to 8 weeks.

The critical part: you need to do both. Using antifungal treatments while continuing to apply products that feed Malassezia is like mopping the floor while the faucet is still running.

Once cleared, maintenance matters. Malassezia is a normal part of your skin flora and will always be present. If you return to using heavy, oil-rich products in a hot, humid environment, it can come back.

Preventing Recurrence

After clearing fungal acne, these habits keep it from returning:

• Shower immediately after sweating. Do not sit in sweaty clothes or let sweat dry on your skin.
• Wear breathable fabrics. Cotton and moisture-wicking materials beat synthetic fabrics.
• Keep your routine fungal-safe. Even after clearing, stick with products that do not feed Malassezia.
• Use an antifungal wash weekly. A maintenance wash with zinc pyrithione shampoo once a week on prone areas helps keep yeast levels in check.
• Change pillowcases frequently. Yeast accumulates on fabric that contacts your face nightly.

Managing a Multi-Step Fungal-Safe Routine

Keeping track of treatment steps, wait times, and alternating active ingredients gets complicated. Layered lets you build your fungal-safe routine with timed intervals for each product and alerts you when it is time for the next step. This is especially helpful when using short-contact antifungal treatments that need precise timing.

The Bottom Line

Fungal acne is not acne and cannot be treated like acne. It is a yeast overgrowth that feeds on oils, esters, and fatty acids found in most skincare products. The fix requires two things: antifungal treatments to kill the yeast and eliminating products that feed it. Identify the problem correctly, simplify your routine with fungal-safe products, and be patient. Most cases clear within a few weeks with the right approach.