Nexcare ColdHot Cold Spray 150ml Provides instant cold to relieve pain and reduce inflammation. Applying heat or cold is a non-medicinal method of treating minor injuries and reducing swelling. Cold helps relieve pain in several ways: it relaxes the nerve endings in the lesion area, reducing the sensation of pain. Reduces swelling caused by blood rush to the area. It soothes the pangs we often feel when we hurt ourselves. Note: In many cases, heat is applied after cold therapy. The heat soothes pain by accelerating blood flow and making muscles and joints more elastic. It is useful for those suffering from arthritis or rheumatism.