Important news: authorities have banned the use of most sunscreens in marine national parks. The fine is up to 100,000 baht (around 2,500–3,000 USD). We explain which products are banned and how to protect your skin without harming coral reefs.
Thailand became one of the first Asian countries to introduce strict measures to protect coral reefs. Planning to visit Similan Islands, Phi Phi or Surin? Please read carefully.
What happened: environmental law
Thailand’s Department of National Parks (DNP) has banned sunscreens containing certain chemical ingredients in all marine national parks. The law has been in effect since August 2021, and enforcement was strengthened in 2025.
Reason: up to 14,000 tons of sunscreen enter the ocean every year. Even one drop per 6.5 million liters of water can cause stress to corals. In tourist areas, concentration reaches levels deadly for reefs. Similar bans already exist in Hawaii, Palau and Mexico.
Banned ingredients
Four components are prohibited:
- Oxybenzone – damages coral DNA
- Octinoxate – causes coral bleaching
- 4-Methylbenzylidene Camphor – disrupts coral reproduction
- Butylparaben – toxic preservative
These substances kill algae that live in symbiosis with corals. Reefs can bleach within 16–48 hours. Always check sunscreen ingredients before your trip!
Where the ban applies
The ban applies to all national parks. Popular tourist locations include:
- Similan Islands (open November–May)
- Surin Islands
- Phi Phi Islands
- Phang Nga Bay
- Ang Thong Marine Park (near Samui)
- Coral Island and Racha Islands near Phuket
If you are joining a snorkeling tour from Phuket, there is a 90% chance you will enter a restricted area. The rule applies to everyone: tourists and locals.
Can you bring regular sunscreen into Thailand?
Yes, you can bring it without restrictions. The ban applies only to usage inside marine national parks.
Important detail: at park entrances, staff may ask you to leave banned sunscreens for temporary storage. They will be returned when you exit — this is not confiscation.
Tip: bring two sunscreens — regular one for city use and Reef Safe for marine excursions.
Penalty for violation
The fine for using banned sunscreen is up to 100,000 baht:
- Approx. 2,500–3,000 USD
- Approx. 260,000–270,000 RUB
This is a permanent law included in Thailand’s environmental code. It is not a temporary campaign. Inspections are especially active during high season.
Myths:
- "Only foreigners are fined" — false, the law applies to everyone
- "Regular beaches are also banned" — false, only marine parks
Allowed sunscreens: Reef Safe
Only mineral filters are allowed. Look for:
- Zinc Oxide – main safe ingredient
- Titanium Dioxide
- Labels “Reef Safe” or “Reef Friendly”
Mineral filters create a protective barrier on the skin and work immediately after application. Important: some brands claim “Reef Safe” but still contain banned ingredients. Always check the ingredient list.
Where to buy Reef Safe sunscreen in Phuket
Didn’t bring Reef Safe sunscreen with you? You can buy it at:
- Boots and Watsons pharmacies – available in most malls
- 7-Eleven – limited basic selection
- Diving centers – professional reef-safe products
Price range: 300–800 baht (around 10–25 USD).
Alternatives: UV-protection rashguard, snorkeling wetsuit, hat and sunglasses.
Conclusion
The sunscreen ban in Thailand’s marine parks is a necessary step to protect coral reefs. If 70% of tourists follow the rules, ecosystems can recover within 10–15 years.
Check your sunscreen ingredients and choose Reef Safe products to protect both your skin and coral reefs.
If you are planning a trip to Similan Islands or Phi Phi, contact us — we will explain all details and help you choose the right tour.
