Salerm 21 Active Technique Essential Conditioning Oil with silk protein is a specific treatment for dry, treated, and/or dyed hair. It has an intensive action thanks to the inclusion of silk proteins. Recovers natural appearance and manageability of sensitive hair, giving it both shine and bounce. WITH FINAL RINSE. Directions: Apply the contents of one vial to damp, shampooed hair. Massage in to spread evenly into hair. Leave on for 3-5 minutes and rinse as may be required.