This new jagged-edge Gua Sha is still gentle on the skin. As a sculpting and lifting tool, it can increase microcirculation by up to 400%, stimulate lymphatic drainage, reduce puffiness, and stimulate collagen and elastin production. Always apply a little Zone Face Lift Elixir or Rose + Frankincense Facial Treatment Oil before use to help the tool glide across the skin rather than pull it. Healing Properties Black Obsidian is known as the stone of clarity. It is recognised for absorbing negative energy and helps with insight when clarification is needed, it can help heal old wounds and remove self-limitations. * This tool is not suitable for use over areas with skin cancer, sensitive skin, any skin conditions, or rosacea. Work around any skin tags or moles you should never smooth over raised acne. Please email me if unsure.