➤ How long does the application take? September 13, 2019 07:05 Updated Follow It's very quick! It only takes a minute or less to apply. Related articles ➤ How long do I leave the hair masque in for? ➤ Can I apply the hair masque to dry hair? ➤ Can I sleep in the hair masque? ➤ Do I still need to shampoo/condition after? ➤ What are the ingredients found in the hair masque?