If you’ve noticed that your curls aren’t bouncing like they used to, you’re not alone. Over time, heat styling, coloring, chemical treatments, and protective styles can affect hair health, leaving curls limp, frizzy, or undefined. That’s where K18’s molecular repair hero ingredient, K18PEPTIDE™ comes in. You’ll find it in the leave-in molecular repair hair mask and oil, and it makes reviving your hair’s natural curl pattern easy–even after extensive damage.
Unlike surface level treatments, K18PEPTIDE™ works on a molecular level to repair and restore curls and coils from the inside out in just 4 minutes, strengthening the molecular structure of hair to bring back its natural strength, softness, smoothness, and shape. So, if your curl definition has been lacking lately, reach for the molecular repair hair mask ASAP (and thank us later).
Reasons you may need help reviving your curl pattern with K18PEPTIDE™
Many factors can disrupt your curl pattern, including:

Heat damage: Regular use of hot tools like curling irons, flat irons, and blow dryers can break down the hair's internal bonds, leading to weakened curls.
Chemical treatments: Coloring or bleaching can compromise the structural integrity of the hair, causing curls to loosen or become uneven.
Environmental stressors: UV rays, pollution, and harsh weather conditions can all play a role in damaging curls over time.
Improper hair care: Not using the right products or styling techniques can cause curls to lose their natural shape. For example, braids that are too tight can put stress on your scalp and weaken curls over time.
The leave-in molecular repair hair mask works at home to counteract all of these factors–helping curls bounce back in a cinch.
How K18REPAIR™ service can help you preserve your curls
Once your curls have been revived, the next step is keeping them healthy and defined. Enter the K18REPAIR™ service. Exclusive to PRO salons, this 2-step damage repair system is designed to protect, strengthen, and preserve curls, even through subsequent intensive treatments (like color or bleach).
And there’s science to back it up: In clinical trials, one 4-minute application of K18 PRO mist improved hair resilience to prevent damage before and after services for stronger hair over time.
Even more: the K18REPAIR™ service also slowed color fading when paired with the K18 leave-in molecular repair hair mask at home.
How K18REPAIR™ service works:
Step 1: K18 PRO mist
Before any salon service, the PRO mist prepares and strengthens hair, helping to repair existing damage and boosting your hair’s natural resilience to chemical processes, heat, or color.
Step 2: K18 PRO mask
After the service, the PRO mask goes to work reversing any new damage in tandem with rebuilding and restoring hair integrity to leave curls voluminous and healthy.
Why K18REPAIR™ service is beneficial for curls:
Keeps curls strong: K18REPAIR™ works to repair and strengthen hair bonds, making your curls more resilient to heat styling, coloring, or chemical treatments.
Prevents breakage: By strengthening hair bonds, this service helps keep your curls and coils intact and healthier in the long term.
Helps preserve your curls: Healthy, strong hair is key to maintaining the shape and definition of your curls, even after it’s undergone intense salon services.
Your curls deserve the best care to stay bouncy and strong–and a K18REPAIR™ salon service is the perfect way to reverse any existing damage and enhance your hair’s overall strength. To maintain results, use the K18 leave-in molecular repair hair mask at home in between salon services for beautiful, healthy curls every day.
Ready to take the next step? Find a K18REPAIR™-certified stylist near you with the Global Stylist + Salon Locator, or ask your current stylist to get K18REPAIR™ certified and add the service to their offerings.