NEW Elemis Musclease Herbal Bath Synergy 1.05 oz Each 10 Ct. Bath Soak. Musclease Herbal Bath Synergy Sachets are formulated with spray-dried algae, maritime pine and rosemary essential oil. These ingredients work together to relieve muscle pain, stressed joints, muscle spasms and tense shoulders. Musclease Herbal Bath Synergy Sachets are ideal for use as part of a fitness program, and are especially beneficial for athletes.