Capixyl™
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Capixyl™ is a biomimetic complex that pairs the signal peptide acetyl tetrapeptide-3 with red clover extract (a source of biochanin A), used in scalp care to support the appearance of fuller, denser-looking hair.
What Capixyl does
Capixyl is the one true performance active in the No. 3 Scalp Elixir — the ingredient that lets the formula make a visible-results promise rather than a purely comforting one. It's designed to support the look of hair density, help hair appear anchored and fuller, and improve the overall look of thickness over consistent use, while the Elixir's botanicals keep the experience gentle enough for reactive scalps.
Under the loupe
Capixyl combines a biomimetic signal peptide (acetyl tetrapeptide-3) with an extract of red clover flower rich in biochanin A. Peptides are short chains of amino acids that act as messengers in the skin of the scalp; the botanical partner brings antioxidant polyphenols to the blend. Together they're formulated to create a healthier-looking foundation at the scalp, which is where the appearance of thicker, more resilient hair begins. Because the scalp is skin, the same peptide-and-antioxidant thinking that transformed facial care is what makes Capixyl compelling in a leave-on scalp treatment.
| Component | What it is | Role in the blend |
|---|---|---|
| Acetyl Tetrapeptide-3 | A four-amino-acid biomimetic signal peptide | Supports the look of a fuller, better-anchored appearance |
| Red Clover Extract | Botanical source of biochanin A, a polyphenol | Antioxidant partner that rounds out the density story |
| Humectant base | Glycerin & butylene glycol carrier | Keeps the actives stable and scalp-friendly |
Where you'll find it
3 Renew No. 3 Scalp Elixir A targeted leave-on treatment. Apply to problem areas only — not all over the scalp. View →Common questions
What is Capixyl and what does it do?
Capixyl™ is a biomimetic complex of acetyl tetrapeptide-3 and red clover extract used in scalp care. In Juje's No. 3 Scalp Elixir it supports the appearance of fuller, denser-looking hair while keeping the formula gentle enough for reactive scalps.
Where in my routine should I use Capixyl?
It lives in the Renew step of the Juje ritual. The No. 3 Scalp Elixir is a targeted leave-on treatment applied only to problem areas of the scalp, not all over, and can be used on dry or styled hair without rinsing.
Is Capixyl a drug or hair-loss treatment?
No. Capixyl is a cosmetic ingredient. It's used to support the look and feel of hair and scalp, not to treat, prevent or cure any condition.
The Ingredient Index is educational. Juje products are cosmetics intended to improve the look and feel of the scalp and hair; they are not intended to diagnose, treat, cure or prevent any condition.