Dermatologist's Guide: How to Prevent Breakouts During City Heatwaves (2026)

The summer heat can be a real challenge for our skin, especially in bustling cities like London. As someone who's experienced the unique struggles of urban heatwaves, I've often wondered how to keep my skin healthy and breakout-free. In this article, we'll delve into the expert advice of Dr. Aamna Adel, a consultant dermatologist, to uncover some valuable insights.

The Impact of Humidity on Skin

One of the key questions is whether sweat is the culprit for skin issues. Dr. Adel clarifies that sweat itself isn't the problem. It's a natural process that helps regulate our body temperature. However, the issue arises when sweat mixes with other factors like sebum, sunscreen, and makeup, leading to clogged pores and irritation for those with sensitive skin. Hot and humid weather can exacerbate acne and seborrheic dermatitis, while for eczema sufferers, the effects can be mixed.

Why Heatwaves Trigger Breakouts

During a London heatwave, our skin tends to produce more oil due to the heat, and the humidity keeps sweat on our skin for longer. This combination of excess oil and sweat, along with other external factors, increases the likelihood of pores becoming blocked and breakouts occurring. Additionally, we tend to touch our faces more frequently in hot weather, introducing further irritation.

Common Skincare Mistakes

One of the biggest mistakes people make during hot and sweaty weather is abandoning their moisturiser and sunscreen routines. Dr. Adel emphasizes the importance of both, even during a heatwave. A lightweight, non-comedogenic moisturiser helps maintain a healthy skin barrier, reducing irritation and allowing the skin to function properly. Similarly, modern sunscreen formulations are lighter and less likely to cause breakouts, so skipping them can expose our skin to UV damage and accelerate ageing.

Adapting Your Skincare Routine

You don't have to overhaul your entire skincare routine during a heatwave. Instead, consider making it lighter. Opt for gel or lotion-based moisturisers if richer creams feel uncomfortable. Continue with a gentle cleanser and ensure you thoroughly cleanse your skin in the evening to remove sweat, sunscreen, and makeup. Consistency is key, especially for those with skin conditions like acne or seborrheic dermatitis.

Ingredients for Summer Skin

When it comes to ingredients, salicylic acid and niacinamide are excellent choices for keeping summer breakouts at bay. Salicylic acid, being oil-soluble, can penetrate pores and reduce congestion and excess oil. Niacinamide helps regulate sebum production and supports the skin barrier. However, it's important to maintain a healthy skin barrier, so pairing these active ingredients with a lightweight moisturiser is crucial.

Balancing SPF, Sweat, and Makeup

To avoid clogged pores, opt for a lightweight, non-comedogenic sunscreen that you'll be happy to reapply regularly. Simplify your makeup routine during hot weather to reduce the number of layers on your skin. Instead of rubbing away sweat, gently blot it with a clean tissue and reapply sunscreen as needed. Always ensure a thorough cleanse at the end of the day. Sunscreen should be a non-negotiable part of your routine, and if you're concerned about congestion, reconsider the cosmetic layers rather than skipping SPF.

The Golden Rule for Summer Skin

Dr. Adel's golden rule is to not fight your skin. When we notice more oil or sweat, our instinct might be to cleanse aggressively or overload our skin with acne products. However, this often leads to further irritation. Instead, focus on supporting your skin barrier with a simple, consistent routine, gentle cleansing, lightweight hydration, and daily sunscreen. Healthy skin is better equipped to handle the challenges of heat and humidity.

In my opinion, this expert advice provides a refreshing perspective on skincare during the summer months. By understanding the impact of heat and humidity on our skin and making some simple adjustments to our routines, we can keep our skin healthy and breakout-free, even in the hottest of cities.

Dermatologist's Guide: How to Prevent Breakouts During City Heatwaves (2026)
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