★Made in Thailand since 1995·ocean-conscious formulas·EST. 1995
Sun School · est. 1995 · class is in session

Everything we
learned in thirty
summers.

Tanning tips. SPF maths. Aftercare rituals. UV index decoded. Everything we've picked up between Phuket and Pattaya — written down, finally.

เรียนรู้ทุกอย่างเรื่องแสงแดด การเลือก SPF และการดูแลผิวหลังออกแดด

Read the basicsToday's UV
11
Articles in the archive
5 min
Average read time
Free
Always · forever · no signup
A+
UV class
passed
Fact 01
SPF 30 blocks ~97%
of UVB, used correctly.
Fact 02
Reapply every 2 hrs
or after a swim.
Fact 03
Coconut + Aloe = ❤
nature's pair.
Kona
02 / The Syllabus

ten lessons
before tomorrow's beach.

From sun protection basics to the perfect aftercare ritual. Pick one, save the rest for the next rainy afternoon.
SPF Maths4 min
Sun Protection

What SPF do you actually need?

SPF 15, 30, 50 — what the numbers mean, and why anything above 50+ is mostly marketing.

By KonaRead →
UV Index3 min
Sun Protection

How to read the UV index like a local

A three-minute crash course in the only weather number that affects your skin every day.

By The labRead →
Tanning Tips5 min
Tanning · How To

How to apply tanning oil so it actually works

Warm hands, even coats, the spots everyone forgets. Twenty-second routine that doubles your color.

By KonaRead →
Aftercare5 min
Recovery Ritual

After Sun: the ritual that keeps your tan

Why the day after the day is the most important. Aloe, hydration, and the no-shower window.

By The labRead →
Reef Safe5 min
Ingredients

Reef-safe sun care: what the labels mean

PABA. Oxybenzone. Octinoxate. What’s actually in your bottle, and why we leave them out.

By The labRead →
Beach Kit3 min
Lifestyle

The five-minute beach kit

Everything that fits in a tote: one oil, one SPF, one aftersun, a towel, a hat. That’s it.

By KonaRead →
UVA & PA7 min
Sun Protection

Melasma, dark spots and the PA rating

If what worries you is ฝ้า rather than burning, the small number on the back matters more than the big one on the front.

By The labRead →
Everyday Sun5 min
Sun Protection

The motorbike arm

Your commute is a bigger lifetime dose than your holidays, and nobody packs for it.

By The labRead →
Tanning Tips5 min
Tanning · Foundations

Can you still tan with sunscreen on?

The question we are asked more than any other. Yes — and the reason why is worth five minutes.

By Kona & the labRead →
Shelf Life5 min
Ingredients

Does sunscreen expire?

Three years sealed, six months open — and far less than either if it lives in a parked car.

By The labRead →
Quick Reference · Bangkok

Today's UV.
read it. respect it.

The UV index is just a number — but it tells you exactly how much sunscreen you need today.

Today · live reading–Checking the skyone moment…
0–2LowLow UV exposure. Protection may still be appropriate for prolonged outdoor activity.
3–5ModerateUse broad-spectrum sunscreen, shade, sunglasses and protective clothing.
6–7HighProtection is essential. Limit prolonged midday exposure and reapply sunscreen every 2 hours.
8–10Very HighExtra protection required. Seek shade during peak UV hours.
11+ExtremeMinimize direct sun exposure during peak hours.
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Kona
see you in class!