K-Beauty first invaded our bathrooms with its ultra-targeted serums, its gel lotions and this famous *Glass Skin* trend which made all of Instagram shine. In France, specialized stores have multiplied and brands like Printemps or Monoprix have set up corners dedicated to Korean care. What if the next revolution coming from Seoul no longer only affects the skin, but also the damaged lengths?
This is precisely the bet of one of the most followed Korean skincare brands, which has decided to transpose its facial expertise to the scalp and hair fiber. After conquering facial care routines, COSRX is opening a new chapter with COSRX Peptide-132, its first care range for damaged hair launched in June 2025 and designed for scalp health. Three actions, a patented ingredient and a promise of in-depth repair: the stage is set.
K-Beauty hair: how COSRX goes from facial to hair care
Founded in 2013, the South Korean brand has established itself as a benchmark in skincare with its “essentials-only” approach: refined formulas, highly targeted ingredients and accessible prices. One thing led to another, COSRX has become one of the most influential K-Beauty brands, driven by the virality of social networks and by best-sellers for the skin barrier. Meanwhile, on the consumer side, the idea that truly beautiful hair starts with a healthy scalp has gradually taken hold.
And then the Korean wave began to spill beyond the face. After revolutionizing skincare routines with its sensory textures and gentle but effective ingredients, K-Beauty now applies the same codes to hair care. In 2026, a new chapter opens: hair care. COSRX got the ball rolling with a routine dedicated to damaged hair and the scalp, in line with its philosophy: treating the root and fiber as you take care of the skin, with the same precision.
COSRX Peptide-132: a 3-step hair routine to repair damaged hair
At the heart of this new line is Peptide-132, or Tripeptide-132 HCl, a patented ingredient developed in-house by the COSRX R&D team. This active was designed using 3D laser scanning and molecular modeling to achieve a molecule small enough to penetrate the hair shaft and target weakened keratin structures. As the brand writes: , explains the brand in comments reported by Here. Thanks to its low molecular weight and its sequence of amino acids, the objective is not only to smooth the surface, but to act at the heart of the structure, at the level of the keratin of the cortex.
The COSRX Peptide-132 range is available in three complementary stages: PEPTIDE-132 Ultra Perfect Hair Bonding Shampoo, which gently cleanses the scalp and lengths while filling in damaged strands and strengthening broken protein bonds from the inside; COSRX PEPTIDE-132 Ultra Perfect Hair Bonding Treatment, applied to mid-lengths and ends to intensely nourish dry and brittle hair and make it softer, smooth and resistant; finally, COSRX PEPTIDE-132 Ultra Perfect Hair Bonding Oil Serum, a high-performance oil serum that penetrates deep into weakened areas to restore strength from within and provide shine. These formulas, pH balanced and dermatologically tested, are suitable for all hair types, including wavy or curly. The brand has already put them to the test backstage at Paris Fashion Week, where they were used on the Courrèges and Caroline Hu shows under the direction of hairstylist Eugene Souleiman. , says a COSRX representative, quoted by PR Newswire. , he continues.
Who is COSRX Peptide-132 hair care made for and how does it change your daily life?
This first hair range primarily targets highly stressed hair: lengths weakened by heating tools, repeated coloring, bleaching, aggressive brushing or simply chronic dryness. By working on damaged keratin bonds rather than a simple sheathing effect, Peptide-132 aims to gradually strengthen the fiber from the inside, while improving the external appearance: smoother, shinier and less brittle hair. On the other hand, working on the scalp, gently cleansed without stripping it, is part of this “from skin to scalp” logic dear to K-Beauty.
Because ultimately, COSRX’s ambition with this hair line is to offer a technical but accessible routine, which is aimed at straight, wavy or curly hair. The formulas have been dermatologically tested and advertised as suitable for all hair types, including wavy/curly, with a balanced pH to limit scalp imbalances. It is also the first time in the 53-year history of Paris Fashion Week that a Korean brand has been officially associated backstage during the main September season, a sign that K-Beauty hair is now making its way to the heart of the fashion industry. The rest will undoubtedly take place as much in the bathrooms as behind the curtains of the fashion shows.
COSRX Peptide-132, what exactly is it?
COSRX Peptide-132 is the first hair range from the Korean brand COSRX, built around a patented peptide, Tripeptide-132 HCl. Designed using 3D laser scanning and molecular modeling, this peptide aims to penetrate the fiber and strengthen weakened keratin structures. The routine consists of three complementary products: a shampoo, a length treatment and an oily finishing serum.
Is the COSRX Peptide-132 hair routine suitable for all hair types?
According to the brand, the pH-balanced formulas have been dermatologically tested and are suitable for all hair types, including wavy or curly hair. The range is primarily aimed at damaged, dry or brittle hair, but can be integrated into a care routine for fine, thick, smooth or textured hair.
What is the difference between COSRX Peptide-132 and traditional hair care?
Classic hair care often acts mainly on the surface by smoothing the cuticle. With COSRX Peptide-132, the idea is to target the keratin bonds at the core of the hair with a low molecular weight peptide designed to penetrate the hair shaft. The brand highlights internal repair work on the fiber, complemented by a visible improvement in softness, shine and resistance.
Have COSRX hair care products been tested in professional conditions?
Yes, the COSRX Peptide-132 hair trinity was used backstage at Paris Fashion Week, including on the Courrèges and Caroline Hu shows. The hairstyling teams led by Eugene Souleiman used it to obtain shiny and resistant hair, capable of withstanding the demands of the shows. This backstage presence illustrates the trust placed by fashion professionals in these formulas.
