CRAMP RELIEF ROLL-ON 1.7OZ. Benefits: Desgined to help soothe and relieve muscle pains to promote a fast recovery.. Clinically Tested. Fragrance Free. Key Ingredients: 4% CAMPHOR: Relieves muscle tightness and backaches.. 4% MENTHOL: Soothes sore muscles and muscles strains.. MAGNESIUM: Helps ease stress and tension.. Research Results: Clinically proven to improve menstrual cycle-related cramps, back aches, pains and muscle aches.*. 92% of participants agreed the product is effective during the menstrual cycle*. *Based on 38 participants, ages 18-35 after 1 Menstrual Cycle in a 2 month study..