When the temperature climbs, so does everything on your skin: more sweat, more oil, and — before long — more clogged pores, blackheads and midday shine. It's one of the most common summer skin complaints, and the instinct is usually to scrub harder and strip more. That's exactly what makes it worse.
Korean skincare takes the opposite approach: balance, not stripping. Gentle cleansing, lightweight layers and smart oil control keep pores clear without triggering your skin to pump out even more oil. Here's a complete hot-weather routine, morning and night, built for warm, sticky Swiss days — from lakeside afternoons to air-conditioned offices and Alpine hikes.
Quick answer
On hot days, heat and humidity make your skin produce more oil (sebum), which mixes with sweat, sunscreen and pollution and settles into pores — leading to congestion, blackheads and breakouts.
The fix is a gentle, balancing Korean routine, not aggressive scrubbing:
- Cleanse gently — double cleanse at night (oil cleanser then a mild foam) to remove sweat, SPF and sebum.
- Exfoliate lightly, 2–3× a week with a BHA or gentle acid pad to keep pores clear.
- Balance and hydrate with a lightweight toner and an oil-free, gel-type moisturiser — oily skin still needs water.
- Protect with a lightweight, non-greasy sunscreen every single morning.
Over-washing and skipping moisturiser both backfire: they dry the surface, so skin makes more oil to compensate.
Why hot days mean sweat, oil and clogged pores
Your skin's oil glands are temperature-sensitive. As it gets warmer, they work harder — studies suggest sebum production rises noticeably with heat and humidity. On a hot Swiss summer day, several things pile up at once:
- More sebum: heat ramps up oil production, especially in the T-zone.
- Sweat and salt: sweat sits on the skin, mixes with oil and can irritate.
- Sunscreen and makeup: essential in summer, but they add layers that need thorough (gentle) removal.
- Dust and pollution: stick to a damp, oily surface more easily.
When all of that settles into pores and isn't cleansed away properly, it hardens into the plugs we see as blackheads and feel as rough, congested skin. Add the common mistake of over-scrubbing — which strips the barrier and spikes oil production — and you get the classic summer cycle of oily-but-irritated skin.
The golden rule: balance, don't strip
The single most important shift is to stop fighting your skin. Harsh foaming washes, alcohol-heavy toners and daily scrubs feel satisfying but damage your moisture barrier. A stripped barrier reads as "too dry" and responds by producing more oil — the opposite of what you want.
The Korean method leans on gentle, soothing, hydrating steps built around ingredients like heartleaf, centella and green tea that calm oil and redness without harshness. You clear pores and keep the barrier happy, so oil production settles down over time.
Your hot-weather Korean routine (AM & PM)
Here's the full routine at a glance, then step by step below.
| Step | Morning (AM) | Night (PM) |
|---|---|---|
| 1. Cleanse | Splash of water or a mild foam | Double cleanse: oil cleanser + foam |
| 2. Exfoliate | — | BHA / gentle acid pad, 2–3× week |
| 3. Tone | Lightweight balancing toner | Lightweight balancing toner |
| 4. Treat | Niacinamide serum (oil & pores) | Soothing / repairing serum |
| 5. Moisturise | Oil-free gel moisturiser | Light gel or gel-cream |
| 6. Protect | Lightweight SPF (essential) | — |
Morning, step by step
- Gentle cleanse. In hot weather you can simply rinse with lukewarm water, or use a mild foam if your skin feels oily on waking. Skip anything that leaves skin squeaky and tight.
- Balancing toner. Press on a lightweight, soothing toner to rehydrate and prep the skin.
- Niacinamide serum. Niacinamide helps regulate oil, refine the look of pores and calm redness — ideal for summer.
- Oil-free moisturiser. A gel or watery lotion hydrates without heaviness. Don't skip this, even if you're oily.
- Sunscreen. A lightweight, non-greasy SPF is non-negotiable — and it's your best anti-ageing and anti-pigmentation step.
Night, step by step
- First cleanse (oil). An oil or balm cleanser melts away sunscreen, sweat and sebum that water alone can't shift.
- Second cleanse (foam). A gentle foam removes the last residue and leaves skin clean but comfortable.
- Exfoliate (2–3× a week). A BHA or mild acid pad clears inside the pores. Don't do this every night.
- Toner → treatment → light moisturiser. Rehydrate, treat with a soothing serum, and seal with a light gel-cream so skin repairs overnight.
The products: a hot-weather line-up
Step 1 — Oil cleanser: ANUA Heartleaf Pore Control Cleansing Oil
A non-comedogenic cleansing oil with heartleaf that dissolves sunscreen, sweat and excess sebum without clogging pores — the perfect first step in a summer double cleanse for oily and acne-prone skin.
Step 2 — Foam cleanser: ANUA Heartleaf Succinic Moisture Cleansing Foam
A mild foaming cleanser with heartleaf and succinic acid that clarifies pores and balances oil, yet preserves moisture so skin never feels tight or stripped.
View the Heartleaf Succinic Cleansing Foam →
Step 3 — Exfoliating pads: MEDICUBE Zero Pore Pads
A 3-in-1 toner, exfoliant and pore treatment in one pre-soaked pad. Mild chemical exfoliants loosen build-up inside pores and help control sebum, for smoother, clearer, less shiny skin. Use 2–3 times a week — this is the hero step for congestion.
View MEDICUBE Zero Pore Pads →
Step 4 — Balancing toner: ANUA Heartleaf 77% Soothing Toner
A watery, lightweight toner that calms, hydrates and rebalances the skin's pH — heartleaf soothes irritation and redness without any heaviness, so it layers beautifully in humid weather.
View the Heartleaf 77% Soothing Toner →
Step 5 — Oil & pore serum: a niacinamide serum
Niacinamide is the summer multitasker — it helps regulate sebum, refine the appearance of pores and even out tone. A lightweight niacinamide serum slots neatly into both AM and PM routines.
Step 6 — Lightweight sunscreen: HOUSE OF HUR Weightless Sun Fluid SPF50+
Oily skin needs a sunscreen that doesn't feel like one. This weightless fluid protects at SPF50+ with a comfortable, non-greasy finish that sits well under makeup — ideal for hot, sticky days.
View the Weightless Sun Fluid → | Shop all sunscreen →
Ingredient cheat sheet for oily, congested skin
| Ingredient | What it does |
|---|---|
| Heartleaf (Houttuynia cordata) | Calms redness and irritation, helps control excess oil |
| BHA / salicylic acid | Oil-soluble, so it exfoliates inside pores to clear blackheads |
| Niacinamide | Regulates sebum, refines pores, brightens and evens tone |
| Centella (Cica) | Soothes and supports the barrier in irritated, breakout-prone skin |
| Green tea | Antioxidant that helps calm and mattify |
| Hyaluronic acid | Lightweight water-based hydration without oil or heaviness |
Common hot-weather mistakes to avoid
- Over-cleansing. Washing more than twice a day strips the barrier and spikes oil. Twice is plenty.
- Skipping moisturiser because you're oily. Dehydrated skin overproduces oil. Use a light, oil-free gel instead.
- Daily scrubbing or acids. Over-exfoliating inflames skin and worsens breakouts. Keep acids to 2–3× a week.
- Heavy creams in heat. Swap rich winter creams for gel textures in summer.
- Skipping SPF because it feels greasy. Choose a lightweight fluid or gel formula — don't skip protection.
- Touching and wiping your face all day. Blot sweat with a clean tissue instead of rubbing.
Hot-weather skin in Switzerland: settings to plan for
- Alpine hikes and sport: heavy sweating plus strong altitude UV. Cleanse well afterwards and never skip a sweat-resistant sunscreen.
- Lake and pool days: sun, sweat and water all at once. Blot, reapply SPF, and double cleanse that night.
- Air-conditioned offices and trains: AC is drying, which can push oily skin to overproduce. Keep a lightweight hydrating layer going.
- Humid summer evenings: lean fully into gel textures and lightweight layers so skin never feels suffocated.
Frequently asked questions
How do I stop clogged pores in hot weather?
Cleanse gently twice a day (double cleanse at night to remove SPF and sebum), exfoliate with a BHA or mild acid pad 2–3 times a week, hydrate with a light oil-free moisturiser, and wear a non-greasy sunscreen daily. Avoid over-scrubbing, which makes oil and congestion worse.
Why is my skin oilier in summer?
Oil glands are temperature-sensitive, so heat and humidity increase sebum production — especially in the T-zone. Sweat and sunscreen then mix with that oil, which is why pores clog more easily in hot weather.
Should oily skin use moisturiser on hot days?
Yes. Skipping moisturiser dehydrates the surface, and dehydrated skin produces more oil to compensate. Use a lightweight, oil-free gel or watery lotion rather than a rich cream.
How often should I exfoliate oily skin in summer?
Two to three times a week with a gentle BHA or acid pad is usually ideal. Daily exfoliation strips the barrier, causes irritation and can trigger more oil and breakouts.
Is double cleansing necessary in hot weather?
At night, yes — especially if you wear sunscreen or makeup. An oil cleanser removes SPF, sweat and sebum, then a gentle foam clears the rest. In the morning, a simple water rinse or mild foam is enough.
What's the best Korean ingredient for oily, congested skin?
Heartleaf and niacinamide are both excellent: heartleaf calms oil and redness, while niacinamide regulates sebum and refines pores. BHA (salicylic acid) is the key exfoliant for clearing blackheads.
Do I still need sunscreen if my skin is oily and it's hot?
Absolutely. Sunscreen is your most important daily step for preventing pigmentation and ageing. Choose a lightweight, non-greasy fluid or gel sunscreen designed for oily skin.
Build your hot-weather routine
Keep it simple and gentle, and your skin will settle:
- Double cleanse at night; rinse or lightly cleanse in the morning.
- Exfoliate with a pad 2–3× a week — no more.
- Layer light: balancing toner, niacinamide, oil-free gel moisturiser.
- Never skip a lightweight sunscreen.
- Resist the urge to scrub — balance beats stripping every time.
MI in ME is a Swiss online store for authentic Korean skincare and K-Beauty, with CHF pricing and fast delivery within Switzerland.
This article is general skincare guidance, not medical advice. If you have persistent acne or a specific skin condition, please consult a qualified dermatologist or healthcare professional.
