Everything you need to know, straight from K18’s Senior Hair Fiber and Measurement Scientist.
You may have noticed that we mention that the patented K18PEPTIDE™ uniquely “clicks in” to your hair’s structure a lot, and that’s because it’s special and really important for your hair’s health. It might sound confusing—like your hair just downloaded some kind of software update—but we hope after reading this blog, it will start to click (pun definitely intended).
start by picturing your hair up close
Not just the strands you see in the mirror, but the microscopic structure inside. What you would see is keratin, which is formed by proteins known as polypeptide chains. These chains are held together by different types of chemical bonds (disulfide bonds, ionic bonds, hydrogen bonds) that help keep your hair strong, elastic, smooth, and able to bounce back from everything you put it through.
Now, picture what things like bleach, color, hot tools, and chemical treatments all do to your hair. Over time, these stressors break down the aforementioned bonds—and when enough bonds break, the internal structure of your hair weakens, leading to dryness, frizz, breakage, split ends and an overall dull appearance. This is because the protein network isn’t as connected as it used to be, literally.
this is where “clicking in” comes in
The click is key! This is the critical piece that makes the hair transformations the molecular repair mask is known for possible. While other products sit on the surface of the hair, the K18PEPTIDE™ clicks into the actual structure of your hair. Emma Cooban, K18’s Senior Hair Fiber and Measurement Scientist, explains the science behind it:
“You can think of ‘clicking in’ as a way to help imagine how K18’s biomimetic peptide interacts with the different types of bonding present in hair,” she says. “The K18PEPTIDE™’s targeted design and small molecular size mean it can penetrate deep into the hair, allowing it to ‘click in’ to place and help restore the network of bonds that reinforce hair’s internal structure.”
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Think of your hair as a ladder. The broken disulfide bonds are the rungs and polypeptide chains are the sides. When you bleach, color or use heat on your hair, the ladder splinters. Repairing the broken ladder is not easy, it takes time and care. Of course you could try polishing up the ladder with some oil, but the result is just a slightly shinier ladder vs. actually reinforcing + repairing the structure of the ladder. Patented K18PEPTIDE™ works by finding those broken spots along the polypeptide chains and reconnecting them at multiple points. According to Cooban, it helps re-form disulfide bonds, supports ionic interactions, and encourages hydrogen bonding—all of which are key for healthy hair.
Most products out there temporarily bridge the rungs (with results that wash away) but that is where the K18PEPTIDE™ is markedly different. K18’s formulas go beyond the surface to address the root cause of common hair woes so your strands actually *stay* soft, healthy, and strong. The ladder is truly repaired!
By reconnecting broken polypeptide chains at the molecular level, K18 helps restore the hair’s core structure—and when that internal network is reinforced, you see the benefits externally:
stronger hair
improved elasticity
smoother texture
more bounce
less breakage over time
how do you know if your hair is damaged?
Spoiler: all of our hair is damaged in some shape or form. Whether you dye it, perm it, or have totally uncolored, untreated hair—living life means damaging our hair. The sun causes damage, hard water in our shower causes damage, humidity causes damage, and blowouts all cause damage. Odds are that as you read this, your hair is indeed damaged AKA you’ve got some broken chains atop your head that are in need of repair.
But don’t worry the leave-in molecular repair hair mask has got you covered. K18PEPTIDE™ “clicks in” as we explained above, to help reverse hair damage from bleach, color, chemical services, and heat in just 4 minutes*.
here’s your repair routine:
step 1: clarify with peptide prep™ detox shampoo
step 2: follow with molecular repair mask, let sit for 4 minutes for the K18PEPTIDE™ to click into your hair’s structure
PRO tip: finish with molecular repair hair oil for even more repair, plus 106% more shine and 78% reduction in split ends*.
This simple routine helps restore hair’s strength and elasticity from the inside out. The result? Softer, stronger, bouncier hair immediately that looks and feels healthier over time.
*k18hair.com/disclaimers
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