1. Bath: Add an appropriate amount of dark bath salt to a bathtub filled with warm water. It is generally recommended to add about 150-300 grams of bath salt according to the size of the bathtub and personal preference, stir evenly to fully dissolve, and then soak for 15-30 minutes. During the soaking process, gently massage the body to promote better absorption of the ingredients in the bath salts by the skin.

2. Foot bath: Add an appropriate amount of warm water to the foot bath, the water temperature should be tolerable, then add 50-100 grams of dark lavender bath salt, stir evenly, and soak the feet in water for 15-20 minutes. During the foot bath, foot massage can be performed to help relax the foot muscles, relieve fatigue, and promote blood circulation throughout the body.

3. Local cleaning: If only the local skin needs care, such as the back, elbows, and other areas that are prone to keratin accumulation, a small amount of bath salt can be placed on a damp towel or bath ball, gently wiped or massaged on these areas, and then rinsed with clean water to effectively remove keratin and make the skin smoother.