K18 is the biotech haircare brand built on a patented “molecular repair” peptide, now owned by Unilever.

K18 brings the round the lab — the biology-first haircare brand, co-founded by Suveen Sahib and Britta Cox, built around a patented peptide it markets as molecular repair, and now owned by Unilever. K18 makes haircare, and its answer to a round about the hair shelf is science: a leave-in mask the brand says repairs hair at a molecular level in minutes, a biotech narrative that went from salons to a viral consumer hit. A brand, biotech.

Its identity is the biotech peptide that promises molecular repair. K18’s patented peptide, its molecular-repair narrative and its Unilever ownership are the story here. A brand, biotech. The biotech peptide that promises molecular repair.

(Honest notes, so the story stays precise, and the claims stay the brand’s own, and the science stays reported not endorsed. K18, at k18hair.com, makes biology-first haircare centred on a peptide it trademarks as its K18Peptide, with a hero leave-in molecular-repair mask plus shampoos, conditioners, oil, heat protectant and dry shampoo, and we report every molecular-repair, biomimetic, peptide and clinically-proven claim strictly as the brand’s own marketing, never as established scientific or medical fact. It was co-founded by Suveen Sahib, its chief executive, and Britta Cox, who also founded the Aquis hair-towel brand, and the consumer brand launched in 2020, with the peptide science predating it, based in Los Angeles, which we present as high-confidence. On where it is made, a theme of this round, a country of manufacture is not documented, so we do not assert one. On ownership, a star theme of this round, it was acquired by Unilever, announced in 2024 through its prestige division, so it is not independent, and the deal value was not disclosed, so we cite no figure. Its name and technology marks are IP we describe but do not reproduce; there is no official brand hex; these tones are an unofficial interpretation.)

K18 lives in a biotech teal. Click a swatch to copy the hex.

K18’s identity is biotech, minimal and clinical — a biotech teal, an ink, an aqua, a deep teal, and a paper. The palette leans biotech teal and aqua: a cool, laboratory register that nods to a peptide and a molecular narrative rather than a loud palette. It signals biotech haircare. The honest caveat: with no published brand hex, these values are an original, unofficial interpretation, not first-party colours.

The lesson is a biotech teal signals a biotech, clinical identity. K18’s world is a minimal, made object. For designers, it is a reminder that a biotech teal and a soft aqua can carry a haircare brand — the tone of a lab. Because these tones can fail as small text, keep type dark and let the colour live in the accents, palette and band. The takeaways: name the science; keep it minimal; report claims as marketing; and treat any single hex as unofficial.

The register is a biotech sans — clinical, plain, precise.

K18’s identity carries a clinical, plain, precise spirit — a biotech brand, not a fashion. A biotech sans captures the mood: clean, precise and confident, the register of a science-led house. Set in a biotech-teal palette, the biotech sans feels clinical and precise — exactly the personality K18 carries. It is a technology rather than a logo, mirroring a serum and a peptide. (K18’s real minimalist packaging is a thing we describe but do not reproduce, and the exact typeface is not ours to use.) Because it is not ours to use, the honest description is “a biotech-sans haircare,” shown here in a stand-in. The type behaves like the brand: clinical, plain and precise.

K18 stands for the biotech peptide that promises molecular repair.

K18 brings the round the lab. A biotech-teal palette, a biotech sans and a patented peptide make one thing — the biotech peptide that promises molecular repair — the whole identity: biotech, minimal and clinical. The peptide is the concept, and the molecular-repair narrative is the pitch. The point is a leave-in mask sold on a science story, from salons to a viral consumer hit, now inside Unilever.

Put to work, the identity is science told straight, as design — and reported, not endorsed. A maker in this spirit would name the science, keep it minimal, and report claims as marketing. A reader in this spirit would keep the facts right: K18 makes biology-first haircare centred on its trademarked peptide, its hero a molecular-repair leave-in mask; it was co-founded by Suveen Sahib and Britta Cox, launching as a consumer brand in 2020; a country of manufacture is undocumented; and it was acquired by Unilever, announced in 2024, so it is not independent. K18 is the round’s one acquired brand, against six independents, the inverse of a sun-care round. The honest editorial moves are to date it to 2020, to name both co-founders, to frame the molecular-repair claims strictly as marketing, to say the making is undocumented, and to state the Unilever ownership without a figure. The lesson K18 teaches is that a named science can be a whole identity, and reporting the claims as marketing keeps it credible.

For designers and brand-builders, K18 continues the hair shelf: name the science — and keep it minimal. The lessons: build a brand on a named, patented technology; keep a stark, clinical look; report molecular and clinically-proven language strictly as your own marketing, never as established science; state a conglomerate acquisition plainly; and never reproduce packaging. It is also a reminder to stay precise: K18 is the biotech haircare brand built on a patented molecular-repair peptide, now owned by Unilever — with the palette here an unofficial interpretation. Read that way, K18 is less a bottle than a technology: a peptide, marketed. The lesson for a brand is that a technology and honest claims reinforce each other, and stating the Unilever ownership keeps the story earned. K18 made the-biotech-peptide-that-promises-molecular-repair the identity — proof that a technology can define a brand.

Keep K18’s identity on hand — save it to a board in the Made Good inspiration library.