Burt's Bees Therapeutic Bath Crystals Strenuous exercise can be great for the body, but hard on muscles. Indulge in a warm bath of Burt's Bees Therapeutic Bath Crystals & essential oils after a workout to help release the lactic acid that builds up during physical activity causing muscle ache. The penetrating action of essential oils helps stimulate the elimination of waste products, helping muscles feel as good as new. Relaxing & rejuvenating Formulated with Lactic Acid Helps to recover muscles