1. Soap and Water: Use soap and water to gently wash the henna-stained area. Use mild soap and warm water and gently scrub the skin in circular motions. This method is effective for removing fresh henna stains.

2. Baking Soda and Lemon Juice: Mix baking soda and lemon juice to create a paste, then apply the paste to the henna-stained area. Leave the paste on for a few minutes, then gently scrub the area with a soft-bristled brush or cloth. Rinse the area with water and repeat as necessary.

3. Olive Oil: Apply a small amount of olive oil to the henna-stained area and gently massage the skin. This method is effective for removing older henna stains.

4. Hydrogen Peroxide: Apply a small amount of hydrogen peroxide to the henna-stained area using a cotton ball or pad. Let the peroxide sit on the skin for a few minutes, then rinse with water. This method is effective for removing stubborn henna stains.

5. Salt and Lemon: Mix salt and lemon juice to create a paste, then apply the paste to the henna-stained area. Let the paste sit on the skin for a few minutes, then gently scrub the area with a soft-bristled brush or cloth. Rinse the area with water and repeat as necessary.