French cosmetics company L’Occitane en Provence has signed an agreement with the commune of Réotier in the Hautes Alpes region to use thermal spring water from its ‘petrified fountain’ in its skin care products.
The water, which filters through layers of dolomite and gypsum is rich in calcium bicarbonate; the water exits the rock at 21°C and then degasses, precipitating the calcium into stalactites.
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