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Acne & Breakouts

Why Does Skin Break Out More in Hot Weather — and Can SPF Make Acne Worse?

Why Does Skin Break Out More in Hot Weather — and Can SPF Make Acne Worse?

Quick answer: heat and humidity increase oil production and trap sweat against the skin, while some rich sunscreen textures can sit heavily on blemish-prone skin. The fix isn't skipping SPF — it's switching to non-comedogenic, oil-free formats and adjusting your cleansing routine for summer.

Why summer makes breakouts worse

Searches for spots and blackheads surge every June to September, and there are real mechanisms behind it: warmer weather increases sebum production, sweat mixes with oil and product residue, and more time outdoors means more sunscreen layered on for longer. For blemish-prone skin, that combination can congest pores.

Does sunscreen cause acne?

Not inherently — but the wrong texture can contribute. Rich, occlusive holiday-body formulas were never designed for facial use on oily skin. Look for facial SPFs labelled non-comedogenic and oil-free, typically gel or fluid textures. Skipping SPF altogether is the worst option: sun exposure can darken the marks blemishes leave behind, trading a short-term breakout for months of visible post-blemish marks.

Young adult gently blotting sweat from their forehead in summer heat — managing summer breakouts and SPF

A summer routine for blemish-prone skin

  1. Cleanse twice daily with a gel cleanser suited to oily skin — salicylic-acid cleansers help keep pores clear; see our acne & breakouts collection.
  2. Don't over-wash. More than twice a day strips the barrier and can trigger more oil.
  3. Choose a gel or fluid oil-free SPF from the SPF collection — Heliocare's oil-free gel textures were designed for exactly this skin type.
  4. Cleanse properly in the evening to remove the day's SPF, sweat and oil — this matters more in summer than any extra treatment step.

Sweat-proofing tips for hot days

  • Blot sweat with a clean tissue rather than wiping — friction aggravates blemish-prone skin.
  • A mineral SPF powder mid-day adds protection without another layer of cream.
  • Keep exfoliating acids to evenings and introduce them gradually — over-exfoliating in summer is a common trigger for irritated, reactive skin.

Struggling to balance acne care with sun protection? Take our free online consultation and our experts will match a full summer routine to your skin — including medical-grade options from ZO Skin Health that are consultation-gated for a reason.

Educational content only — not medical advice. If acne is severe or persistent, speak to your GP or a dermatologist.

Good to know

Frequently asked questions

Does sunscreen clog pores and cause acne?
Sunscreen itself does not cause acne, but rich, occlusive textures can sit heavily on blemish-prone skin. Choose facial SPFs labelled non-comedogenic and oil-free — gel and fluid textures work best in heat. NHS acne guidance also recommends non-comedogenic products throughout your routine.
What SPF is best for acne-prone skin?
An oil-free, non-comedogenic broad-spectrum SPF 30–50 in a gel or fluid texture. Mineral powder SPFs are useful for midday top-ups without adding another cream layer.
How do I stop sweat causing breakouts?
Blot rather than wipe, cleanse soon after heavy sweating, use a lightweight routine, and always remove SPF and sweat thoroughly in the evening with a proper cleanse.
Should I change my cleanser in summer if I have acne?
Often yes — if you use a cream cleanser in winter, a gel or foaming cleanser (optionally with salicylic acid) handles summer oil and SPF removal better without over-stripping.