In the case of the Blue Lagoon, we see blue because the silica that permeates the water only reflects blue and absorbs all other colors!
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Silica—composed of silicon and oxygen—is a constituent compound of lava and merges with geothermal seawater in volcanic aquifers deep underground. When the superheated water reaches the surface and cools, silica molecules are set free, becoming the iconic white mud that is one of Blue Lagoon's hallmarks.
The water's iconic color is a result of the way that silica reflects sunlight. Deep in the earth, the water's temperature is a scorching 240° C. By the time the water reaches the lagoon, it is a warm, luxurious 38° C. Geothermal seawater is 70% ocean water and 30% freshwater.
The water is a mix of fresh and seawater and, according to the spa website, the unique algae plants and high concentration of silica directly benefit the skin. They claim the anti-bacterial effects of silica improve psoriasis and eczema and that the mineral water prevents premature aging.
Luckily, this isn't like many other geothermal pools in Iceland! There, sulfuric compounds are the main characters, and everything smells like a million rotten eggs. Misunderstand us correctly; some people might feel like the Blue Lagoon doesn't smell like a bundle of roses!
Blue Lagoon – HistoryIt is not a natural hot spring – in fact, the water within is wastewater from the power plant! While at first glance this may put you off, it should be noted that the water in the Blue Lagoon is completely safe and contains only natural minerals.
Do you shower after the Blue Lagoon? Yes, you should shower before and after your stay at the lagoon. Guests are required to shower, without their swimsuit, prior to using the geothermal spa. Simply use the showers and soaps available in the changing rooms.
The seawater in the Blue Lagoon has high levels of silica. Silica is not harmful to hair. However, if your hair gets wet, it can become stiff and difficult to manage. Therefore, we recommend that you apply conditioner to your hair before entering the lagoon--and leave it in your hair while in the lagoon.
The seawater in the Blue Lagoon has high levels of silica. Silica is not harmful to hair. However, if your hair gets wet, it can become stiff and difficult to manage. Therefore, we recommend that you apply conditioner to your hair before entering the lagoon--and leave it in your hair while in the lagoon.
Unlike boring old regular geothermal water, the composition of the Blue Lagoon is unique—you won't find it anywhere else in the world. It's home to a couple of algae plants also not known to exist elsewhere. This combination has been found to have a number of proven beneficial effects on skin.
The fact of the matter is that Blue Lagoon's water does in many cases make your hair quite weird. The minerals in the water will coat each and every hair making it stiff and feel dry even though it isn't really.