Frequently Asked Questions

Get answers to common questions about K18 Treatment.

K18 rebuilds internal peptide bonds using a professional mask and leave-in finishing treatment. It penetrates the cortex to reconnect broken bonds, improving strength, elasticity, and texture. Ideal for reversing damage from bleaching, heat, or chemical services in one appointment.

Results vary by hair type and home care but many clients notice benefits lasting four to six weeks. Using K18 at home and minimizing heat/chemical stress can extend results; regular salon touch-ups help maintain long-term improvement.

Yes. K18 is formulated for use on color-treated and lightened hair and is often applied immediately after services to repair damage. It won't alter your color when used correctly; technicians monitor timing to ensure safe, effective results.

Severely damaged hair may require two to four sessions spaced two to four weeks apart, combined with professional color scheduling. Your stylist will assess porosity and breakage to recommend a personalized plan and home maintenance for sustained rebuilding.

Yes — K18 can be added during or immediately after color/lightening. Your stylist will incorporate the mask and finishing step at the appropriate time to repair bonds without interfering with color processing, improving integrity throughout the service.

We recommend the take-home K18 maintenance product to prolong salon results. Applied to towel-dried hair between washes, it reinforces repaired bonds. Combine with gentle shampoo, reduced heat, and periodic salon treatments for best, long-lasting hair health.