Engineered with patented biomimetic remineralisation technology, CRYSTAL repairs the mineral losses from the tooth enamel with its natural constituent formula, working against dental aging, protecting from cavities, reducing sensitivity and nourishing the teeth from the inside out. The white colour of 'new' minerals gives the teeth a younger, whiter shade. The patented formula also contains the natural herbal enzyme papain in combination with zinc for effective plaque and pigment elimination. The extraordinarily low RDA value ensures super-sensitive, non-abrasive cleaning of teeth. SLS-free (Sodium Lauryl Sulfate is a foaming agent which can cause aphtha and dehydrates the oral mucosa). Suitable for children over 4 years RDA 14 Paraben-free. Fluoride-free. Not tested on animals