Known for its cult-favorite skincare k-beauty brand, CosRx, expanded into the haircare category. The brand launched its first-ever haircare line – the three-step Peptide-132 Haircare Collection.

Responding to this shift and the growing “skinification of hair” trend – a movement that treats the scalp and hair with the same care, ingredients, and routines once reserved for skincare – CosRx applied its skincare philosophy to scalp and haircare.

A CosRx spokesperson said, 

“We didn’t want to create just another haircare line. We wanted to take what we know best – skin science – and apply it to the scalp and hair. Peptide-132 is the result of over two years of research and development, and it represents our commitment to creating truly functional, transformative products.”

The Science

Nourishing from root to tip, the Peptide-132 collection offers a “Hair Salon at Home experience” powered by skincare-grade innovation.

CosRx’s R&D team developed Peptide-132 (Tripeptide-132 HCl), a patented tripeptide created to target and rebuild damaged keratin. 

Using advanced 3D laser scanning and molecular modeling, the team designed a molecule small enough to penetrate deep into the hair shaft and bind directly to weakened areas, reinforcing internal structure and smoothing the surface.

Peptide-132 has been clinically tested to reduce breakage, improve manageability, and restore bounce, softness, and shine – even after just one use.

As the “Glass Skin” trend evolves into “Glass Hair,” more consumers are seeking that same smooth, polished, and reflective finish—this time for their strands. 

Trending topics like Glass Hair, Korean Haircare, Hair Botox, and Hair Styling are gaining huge popularity on social media platforms, reflecting the demand for science-driven formulas that deliver visible transformation. 

The Line Up

The collection includes a Shampoo, a Treatment, and an Oil Serum, formulated with the brand’s science-backed approach and gentle dermatological precision.

Peptide-132 Ultra Perfect Hair Bonding Shampoo gently removes buildup while delivering intensive bond repair. It purifies the scalp, calms irritation, and leaves hair soft, clean, and manageable.

The Peptide-132 Ultra Perfect Hair Bonding Treatment is a rich, creamy formula that rebuilds from within while smoothing the outer layer for long-lasting shine and strength.

The Peptide-132 Ultra Perfect Bonding Oil Serum locks in hydration, reduces frizz, and enhances shine without greasiness. It is lightweight and restores damaged ends while protecting against environmental stressors.

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