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WAY-316606 is a research compound best known in the hair-loss world for switching on Wnt signaling, a growth pathway important for the hair follicle. It does this by blocking SFRP1, a natural brake on Wnt. In lab studies on human scalp follicles it encouraged hair growth, which is why it gets attention as a possible topical hair treatment. It is a research chemical, not an approved or marketed hair-loss drug.
- Activates the pro-growth Wnt pathway in follicles
- Enhanced hair growth in human follicle studies
- Targets SFRP1, a validated hair-loss target
- Points to a mechanism separate from DHT blockers
Mechanism
Hair-follicle growth leans heavily on Wnt/beta-catenin signaling, and one of the body's own brakes on that pathway is secreted frizzled-related protein 1 (SFRP1), which mops up Wnt signals before they land. WAY-316606 was identified as an SFRP1 ; by blocking that brake, it frees Wnt signaling to run, boosting beta-catenin activity in the dermal papilla (the follicle's control center) [1]. In cultured human scalp hair follicles this prolonged the active growth phase and enhanced hair growth, and notably the same study found the well-known hair-growth side effect of cyclosporine A traces to it also suppressing SFRP1, pointing to SFRP1 as a genuine, drug-friendly target for hair loss [1].
receptor fingerprint
SFRP1 (Wnt inhibitor)antagonist
Wnt / beta-catenin pathwayactivates
Dermal papillasupports
Safetyrisks and cautions, not medical advice
A research chemical with no approved human use; safety in people is not established. Because Wnt signaling is used all over the body and is tightly linked to cell growth, poking it deserves real caution, and reputable data come from lab and ex-vivo studies rather than clinical trials. Not a consumer hair product.
Subjective profileweighing the evidence above
Not a hair treatment. It is a lab compound with one interesting result on human scalp follicles and nothing beyond that, no clinical trials and no established human safety. Poking Wnt, a growth pathway used all over the body, without that data is a poor trade for hair.
Resources
This entry is here for reference.
Research
- 1.Identifying novel strategies for treating human hair loss disorders: Cyclosporine A suppresses the Wnt inhibitor, SFRP1, in the dermal papilla of human scalp hair follicles
1 listed here; entry last updated July 2026
Reviews
My notesprivate to this device
FAQ
How does blocking SFRP1 grow hair?
SFRP1 is a natural brake on Wnt signaling, and Wnt is a big driver of follicle growth. Take the brake off and Wnt signaling ramps up in the dermal papilla, which pushes the follicle back into its growing phase.
Is this like finasteride or minoxidil?
No; it works on a different mechanism. Finasteride lowers DHT and minoxidil acts on blood flow and follicle biology, whereas WAY-316606 targets the Wnt/SFRP1 axis, so in theory it could complement them.
Can I buy it as a hair treatment?
It is a research chemical, not an approved or formulated hair product. The encouraging data are from lab and ex-vivo human follicle studies, not clinical trials.
Where did the idea come from?
Researchers noticed cyclosporine grows hair as a side effect, traced that to it suppressing SFRP1, and then showed a dedicated SFRP1 blocker could do the same thing on purpose.
Limitations of the evidence
- No clinical trial data
Notes and cautions
- Human safety not established
- Wnt pathway is growth-linked, warranting caution
- Research-chemical purity varies by source