Natural protection for the teeth and gums. Natural sodium bicarbonate helps neutralise harmful plaque acids, and stimulates salivation to promote self-cleansing and reduce the formation of tartar. Menthol freshness. Weleda Salt Toothpaste is slightly alkaline and neutralises caries-promoting acids, particularly after meals. Half an hour after cleansing the teeth the normal pH is restored. The slightly salty taste is complemented by a mixture of essential oils for long lasting freshness. Weleda is a cruelty-free brand; they do not test any of their products on animals.