People with skin disorders or infection at the treatment site, a known hypersensitivity to hyaluronic acid, a history of severe aller-gies or known allergies to lidocaine, or any of the ingredients in Redensity I, should not have the treatment. People with autoim-mune disorders, pregnant and breast-feeding mothers should also not have the treatment. Sportsmen and women must be aware that the product contains an active component which could cause a positive reaction in a drug test.