Osma Laboratories

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About Laboratoires Osma

Since 1957, Laboratoires Osma has been handmaking alum stones in France, keeping manufacturing local to maintain its high quality. Being able to control the process from start to finish, has allowed them to offer products with less carbon and environmental impact. Using their knowledge and expertise, their handcrafted collection incorporates natural and pure ingredients to create gentle and effective products. Known for their popular line of alum products.