Skin to scalp: COSRX debuts hair care line as Amorepacific advances peptide research

COSRX's PEPTIDE 132 hair care range
COSRX's first hair care range serves to address an increasing demand for "glass hair". (COSRX)

Amorepacific-owned COSRX has launched its first hair care range made using a patented peptide technology, as the company makes progress in hair fortification research.

Designed to deliver professional-level results at home, the new PEPTIDE 132 hair care series continues the brand’s mission to make advanced, science-backed beauty accessible.

In response to the growing “skinification of hair” trend, COSRX has applied its skin care expertise to scalp and hair care, creating a line of products that claim to not only mask damage but also repairs it from within.

“Trending topics like glass hair, Korean hair care, hair botox, and hair styling are gaining huge popularity on social media platforms, reflecting the demand for science-driven formulas that deliver visible transformation.

“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,” the brand said.

Like how collagen supports skin, keratin is an essential protein that gives hair its strength, structure and shine, and that weakens over time due to heat styling, colouring, UV exposure, and stress.

PEPTIDE-132 (Tripeptide-132 HCl) is a patented tripeptide developed by COSRX’s R&D team to target and rebuild damaged keratin.

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

It has been clinically shown to reduce breakage, improve elasticity and manageability, and restore bounce, softness, and glossiness.

Other key benefits include sealing hair cuticles to diminish visible damage such as frizz and split ends, and being dermatologist-tested, pH-balanced and low-irritation for safe use on scalp.

The products, comprising a shampoo, a treatment and an oil serum, can be used alone or as a three-step routine. They are also said to be suitable for all hair types, ranging from straight and wavy to curly and coily textures.

“We didn’t want to create just another hair care 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.”

Leveraging AI in research

Amorepacific shared its seminal research findings on hair strengthening during the 21st Annual Conference of the Korean Hair Research Society in Seoul on May 25.

The event was attended by academics from countries around the world who spotlighted their latest scalp and hair research breakthroughs, and illuminated current trends in hair biology and hair loss treatment.

At the conference, researcher Chan-Su Rha from Amorepacific R&I Center delivered a presentation titled “Advanced Sequence-Based Biomaterial Design for Hair Strengthening: From Molecular Docking to Experimental Validation”.

The presentation featured research that harnesses artificial intelligence (AI) and molecular simulation technologies to identify and validate peptide sequences demonstrating “remarkable efficacy” in hair fortification.

Specifically, the research team delineated the characteristics of peptide sequences that enhance the tensile strength of hair through molecular docking simulations, subsequently verifying these effects in actual hair samples.

This study employed machine learning techniques for large-scale library analysis and screening tools, enabling a “significantly more efficient” discovery process for biomaterials effective in strengthening hair.

“Amorepacific is committed to integrating the latest AI technologies with our dermatological research capabilities to swiftly deliver more effective and innovative products to consumers.

“Looking ahead, the company will actively apply its skin care expertise to scalp and hair care, continuing our research endeavours to spearhead advancements in the global hair care market,” said Byung-Fhy Suh, Chief Technology Officer and head of Amorepacific’s R&I Center.