➤ How do I store the hair masque? September 13, 2019 07:00 Updated Follow Store below 30 °C and keep the jar sealed tight when not in use. Related articles ➤ How long will a jar of the masque last? ➤ Can you send me a sample before purchasing the hair masque? ➤ Can I recycle the hair masque jar? ➤ How big is the hair masque jar? ➤ Do you guarantee results?