Miami Beach Acne: Is Sunscreen Yeast Fueling Pores?

By Franklin Everett Shaw

January 8, 2026

The relentless Miami sun, the humidity that clings to you like a second skin, and the constant pursuit of that perfect beach glow. It’s a recipe, unfortunately, for skin woes, especially for those prone to Malassezia folliculitis, often mistaken for stubborn acne. But fear not, sun-seekers! Understanding the connection between your sunscreen, the Miami climate, and this pesky yeast is the first step to clear, confident skin.

Miami’s humidity is a breeding ground for Malassezia, a type of yeast naturally found on the skin. This yeast thrives in warm, moist environments, and South Florida provides the perfect conditions for it to overgrow. When this happens, it can inflame hair follicles, leading to itchy, acne-like bumps, particularly on the chest, back, and face.

Many sunscreens contain ingredients that Malassezia loves to feed on. These ingredients, often oily or emollient, create a feast for the yeast, exacerbating the problem. Common culprits include:

• Fatty acids and their derivatives: Look for ingredients like lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, and linoleic acid. These are often found in plant-based oils like coconut oil, olive oil, and shea butter, which are popular in “natural” sunscreens.
• Esters: Isopropyl palmitate, isopropyl myristate, and glyceryl stearate are common examples. These ingredients help give sunscreen a smooth, spreadable texture, but they can also fuel Malassezia growth.
• Polysorbates: These emulsifiers, like polysorbate 20 and polysorbate 80, can also contribute to the problem.

Navigating the sunscreen aisle in a Miami pharmacy can feel like a minefield. Here’s a step-by-step guide to help you identify potential triggers and choose a Malassezia-safe sunscreen:

1. Read the ingredient list carefully: Don’t just rely on the front label. Scrutinize the ingredient list for the fatty acids, esters, and polysorbates mentioned above.
2. Look for “oil-free” and “non-comedogenic” formulas: While these terms aren’t always foolproof, they’re a good starting point.
3. Consider mineral sunscreens: Mineral sunscreens containing zinc oxide and titanium dioxide are generally considered safer for Malassezia-prone skin. However, some formulations may still contain problematic ingredients, so always double-check the label.
4. Patch test: Before applying any new sunscreen to your entire face or body, test it on a small, inconspicuous area for a few days to see if you experience any adverse reactions.

Here are a few specific sunscreen recommendations that are generally considered safe for Malassezia-prone skin and readily available in Miami pharmacies like CVS, Walgreens, and Publix:

• EltaMD UV Clear Broad-Spectrum SPF 46: This is a cult favorite among dermatologists and skincare enthusiasts. It’s oil-free, non-comedogenic, and contains niacinamide, which can help reduce inflammation. You can find it at most CVS locations in Miami.
• La Roche-Posay Anthelios Melt-In Sunscreen Milk SPF 60: While not strictly “oil-free,” this sunscreen is formulated with a high concentration of mineral filters and is generally well-tolerated by those with sensitive skin. Check Walgreens for availability.
• Neutrogena Ultra Sheer Dry-Touch Sunscreen SPF 55: This is a more budget-friendly option that’s widely available. It’s oil-free and provides broad-spectrum protection. Look for it at Publix.

Remember to always check the ingredient list of these products, as formulations can change.

Beyond sunscreen, a consistent skincare routine is crucial for preventing Malassezia folliculitis in Miami’s humid climate. Here’s a suggested routine:

Morning:

1. Cleanse: Use a gentle, sulfate-free cleanser to remove excess oil and sweat. Look for cleansers containing ingredients like salicylic acid or benzoyl peroxide, which can help control yeast overgrowth. CeraVe Renewing SA Cleanser is a good option.
2. Treat: Apply a topical antifungal treatment, such as ketoconazole or selenium sulfide shampoo, to affected areas. Leave it on for a few minutes before rinsing off. Nizoral Anti-Dandruff Shampoo can be used as a face and body wash.
3. Moisturize: Even oily skin needs hydration. Choose a lightweight, oil-free moisturizer. Neutrogena Hydro Boost Water Gel is a popular choice.
4. Sunscreen: Apply your Malassezia-safe sunscreen liberally.

Evening:

1. Cleanse: Double cleanse to remove all traces of sunscreen, makeup, and pollution.
2. Treat: Use a topical retinoid, such as adapalene or tretinoin, to help exfoliate the skin and prevent clogged pores. Start with a low concentration and gradually increase as tolerated. Differin Gel is an over-the-counter option.
3. Moisturize: Apply your lightweight, oil-free moisturizer.

Weekly:

1. Exfoliate: Use a gentle chemical exfoliant, such as an AHA or BHA peel, to remove dead skin cells and prevent clogged pores. The Ordinary Lactic Acid 10% + HA is a good starting point.

Common Mistakes and Pitfalls:

• Over-exfoliating: Exfoliating too often or too aggressively can irritate the skin and worsen Malassezia folliculitis. Stick to gentle exfoliation once or twice a week.
• Using comedogenic makeup: Makeup can clog pores and contribute to breakouts. Choose non-comedogenic, oil-free makeup products.
• Not washing workout clothes immediately: Sweat-soaked workout clothes can create a breeding ground for Malassezia. Wash them immediately after exercising.
• Ignoring diet: While diet isn’t the primary cause of Malassezia folliculitis, some people find that reducing their intake of sugary and processed foods can help improve their skin.

Living in Miami doesn’t mean you have to sacrifice your skin for the sake of enjoying the sun. By understanding the connection between sunscreen ingredients, the humid climate, and Malassezia folliculitis, you can make informed choices and develop a skincare routine that keeps your skin clear and healthy. Remember to be patient and consistent with your routine, and don’t hesitate to consult a dermatologist if you’re struggling to manage your condition. With the right approach, you can enjoy the Miami sunshine without the skin woes.