Use high-quality henna powder. 2. Mix the paste with water or lemon juice and let it rest. 3. Apply slight heat to the henna paste before applying. 4. Seal the dried mehndi with a lemon-sugar mixture. 5. Leave the paste on your skin for a longer time, preferably overnight. 6. Avoid washing the design immediately after removing the dried paste. 7. Expose the mehndi design to heat after removal. 8. Protect and moisturize the mehndi with natural oils or balms.