Two actives, chosen for documented mechanisms.
This serum pairs scalp-derived bacterial exosomes, researched for their signalling effect on the cells that govern the hair cycle, with copper tripeptide, studied for its role in follicle support and blood supply. Here is what the published literature describes.
Signal
Exosomes are nanoscale vesicles (50–150 nm) that cells use to carry bioactive cargo and signal one another.1
Cycle
Published research on scalp-derived Leuconostoc exosomes reports increased proliferation and migration of human follicle dermal papilla cells.2
Support
Copper tripeptide is documented for stimulating VEGF and angiogenesis, improving blood supply to the follicle.3
Exosome vesicle · illustration. (Illustrations are conceptual representations for educational purposes and do not depict actual laboratory imaging.)
Leuconostoc Exosome Complex
Exosomes are extracellular vesicles released by cells into the space around them, carrying proteins, RNA and lipids used for intercellular communication — one cell packaging instructions, another receiving them.1
Our exosome active is derived from Leuconostoc, a lactic acid bacterium found naturally on the human scalp. In peer-reviewed work published in Current Issues in Molecular Biology, extracellular vesicles from scalp-derived Leuconostoc increased proliferation and migration in human follicle dermal papilla cells and modulated the expression of genes associated with hair growth, attributed by the authors to regulation via the Wnt/β-catenin signalling pathway.2
The dermal papilla sits at the base of every follicle and determines when a hair grows, rests and sheds. It is the cell population most hair research is ultimately trying to reach.
Copper tripeptide & the hair follicle · illustration. (Illustrations are conceptual representations for educational purposes and do not depict actual laboratory imaging.)
GHK-Cu
Copper tripeptide-1 is a three-amino-acid peptide bound to copper. It occurs naturally in human plasma, and measured levels decline with age — broadly over the same period during which hair thinning tends to accelerate.3
A 2018 review in the International Journal of Molecular Sciences documents its regenerative and protective actions, including stimulation of VEGF and angiogenesis, which improve blood supply to the follicle and the dermal papilla that depends on it.3 Earlier in-vitro work on tripeptide-copper complexes reported elongation of human hair follicles and increased dermal papilla cell proliferation.4
- Kalluri R., LeBleu V.S. The biology, function, and biomedical applications of exosomes. Science, 2020. ncbi.nlm.nih.gov
- Yoon Y.C., Ahn B.H., Min J.W., Lee K.R., Park S.H., Kang H.C. Stimulatory effects of extracellular vesicles derived from Leuconostoc holzapfelii that exists in human scalp on hair growth in human follicle dermal papilla cells. Current Issues in Molecular Biology, 2022; 44(2): 845–866. ncbi.nlm.nih.gov
- Pickart L., Margolina A. Regenerative and protective actions of the GHK-Cu peptide. International Journal of Molecular Sciences, 2018; 19(7): 1966. ncbi.nlm.nih.gov
- Pyo H.K. et al. The effect of tripeptide-copper complex on human hair growth in vitro. Archives of Pharmacal Research, 2007.
Research cited above reflects published scientific literature on the individual active ingredients used in this formula. It describes ingredient-level mechanisms, not clinical testing of the finished product. Individual results may vary.
Where it fits in your routine.
A scalp serum works on skin, not strands. The sequence matters more than the quantity.
Wash
Start with a clean scalp. Shampoo and towel-dry.
Dry
Apply to a dry or barely damp scalp, not soaking wet hair.
This Serum
approximately 1ml / or 1 full squeeze of the dropper, parted section by section. Massage in for 30 seconds.
Leave
Do not rinse. Style as normal.
Scalp suitability
- Thinning or reduced density
- Increased shedding
- Fine, weak hair
- All hair types — men and women
- Broken or irritated scalp
Results timeline
- Weeks 1–4Healthier scalpScalp feels conditioned and prepped as the serum settles into your routine.
- Weeks 4–8Less sheddingMany users notice reduced fall and stronger-feeling roots with consistent use.
- 3–5 monthsFuller densityFollicular-level support shows as thicker, fuller-looking hair over time.
Timeframes reflect typical ingredient-level research. Individual results may vary.


