using K18 on clients with previously installed extensions, please follow the instructions for the specific service being performed.

for best results, wait 3-4 shampoos post-treatment before using the K18 leave-in molecular repair hair mask either in the salon Towel dry hair, then apply 1-3 pumps of K18 professional molecular repair hair mask based on your client’s length and density, only to the ends and mid-lengths (avoiding the root). For best results, start with 6 sprays per quadrant and increase up to 10 as needed based on your client’s lengthwhen using K18 professional molecular repair hair mist, so continue to formulate as you normally would to achieve Apply 1-3 pumps of K18 professional molecular repair hair mask based on your client’s length and density, starting at the ends and working up towards the roots. This leave-in treatment mask repairs hair damage and restores hair to a healthy state after salon services. Powered by the K18PEPTIDE™ to reconnect broken polypeptide chains and disulfide bonds to renew strength and elasticity in just 4 minutes. This mask is clinically proven to repair damage from bleach* + color*, chemical services*, and heat* for immediate + lasting results. How to use as part of a styling service or as part of a K18 molecular repair service standalone treatment:

Towel dry hair, then apply a minimum of 10 full sprays of K18 professional molecular repair hair mist to each quadrant, increasing up to 20 sprays per quadrant as needed, depending on client’s length, density, and level of damage. After application is complete, comb through each quadrant to ensure even distribution of K18 pro chelating hair Wait 4 minutes (do not rinse out). Then follow with the recommended shampoo per your keratin straightener service instructions. Once complete, wait 4 minutes. Then follow with the recommended shampoo per your keratin straightener service Wait 4 minutes (do not rinse), then apply 1-3 drops of K18 molecular repair hair oil to mid-lengths and ends.

Jon Reyman, a bicoastal hairstylist and cofounder of Spoke & Weal Salon, which has locations in Boston, Chicago, New York City, Nashville, Palo Alto, Los Angeles, and San Francisco.