Lava stone for Gua Sha facial massage & body massage Obsidian stone: Is said to release blockages, help with shock, promote medial abilities, accelerate wound healing and promote digestion, facilitate absorption of vitamins C and D, alleviate circulatory disorders, pain and tension, and improve hair, nails and skin. It is said to have a calming effect on the skin, relieve redness and strengthen connective tissue. Suitable for mature and impure skin. The upgrade for your beauty routine! In traditional Chinese medicine, gua sha massage is the ultimate secret tip for natural lifting!