Great for external cooling pain relief, Zheng Gu Shui may be used for the temporary relief of aches and pains of muscles and joints associated with backache, lumbago, strains, bruises, sprains, and arthritic or rheumatic pain, pain of tendons and ligaments. May be used 3 to 4 times daily but should not be used on irritated or damaged skin. Available in a 1 fl. oz liquid, 2 fl. oz. spray, 3.4 oz liquid or 3 fl. oz with direct applicator tip.