The Blue Lagoon, located on Iceland’s Reykjanes Peninsula, is one of the country’s most famous attractions, attracting travelers from all over the world. Known for its milky-blue geothermal waters, healing minerals, and surreal volcanic surroundings, the lagoon is a must-visit for anyone exploring Iceland. Whether you’re planning a short stop on the way to Reykjavik or a luxurious spa day, this guide covers everything you need to know.

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A Man-Made Geothermal Wonder

Although the Blue Lagoon looks natural, it was actually formed in 1976 as a result of geothermal runoff from the nearby Svartsengi power plant. Locals discovered that the mineral-rich water was perfect for bathing, and the area eventually developed into a world-renowned spa destination. Today, the Blue Lagoon offers both day visits and luxurious spa experiences, combining relaxation with Iceland’s unique volcanic landscape.

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Why the Water Is Milky Blue

One of the most striking features of the lagoon is its unique milky-blue color. This effect comes from silica minerals in the water, which reflect sunlight and scatter blue light, giving the lagoon its magical hue. The color can appear differently depending on the time of day, weather, and steam rising from the water, ranging from pale turquoise to deep blue. Beyond its beauty, the water is rich in minerals and algae, which are known for their beneficial effects on skin, including soothing conditions like psoriasis.

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Health and Skin Benefits

The Blue Lagoon’s geothermal waters are renowned for their healing properties. Silica and algae in the water help cleanse and nourish the skin, while the warm temperatures promote relaxation and stress relief. Visitors often enjoy face masks made from silica mud, which are included in many ticket packages. Regular visitors report that the lagoon helps soften skin, relieve tension, and provide an overall sense of rejuvenation.

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Temperature and Safety

The water at the Blue Lagoon is comfortably warm year-round, ranging from 37–40°C (98–104°F). While it is safe for most visitors, it is not recommended for infants or people with open wounds. The lagoon is carefully monitored for safety, hygiene, and water quality. Visitors are also advised to shower before entering to maintain cleanliness.

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Visiting in a Volcanic Area

The Blue Lagoon is situated on the geologically active Reykjanes Peninsula, home to volcanic activity and geothermal features. While recent eruptions haven’t directly impacted the lagoon, it’s always important to follow local authorities’ instructions and pay attention to safety notices during visits. This unique setting gives visitors the chance to experience a geothermal spa in the heart of Iceland’s volcanic landscape.

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Tips for Visiting the Blue Lagoon

• Book in advance: The Blue Lagoon is one of Iceland’s most popular attractions, and tickets often sell out weeks in advance.
• Bring your swimsuit: Towels and robes may be included in some ticket packages, but bringing your own is always a safe choice.
• Protect your hair and jewelry: Silica can dry hair, so use conditioner or tie long hair up. Remove silver jewelry to prevent tarnishing.
• Plan your visit time: Early morning or late evening visits help avoid crowds and allow for stunning sunrise or midnight photos.
• Hydrate: Warm water can be dehydrating, so drink plenty of water before and after your soak.