12 Weeks of JXL069

Most people testing hair loss compounds are doing it under normal conditions.

I’m not.

For the past 12 weeks, I’ve been running an experiment with JXL069 — while simultaneously maintaining a supraphysiological androgen load through 200mg/week testosterone.

And that changes everything.

Because if something works here… it’s not just interesting — it’s meaningful.


The Setup: Not Your Typical Hair Loss Experiment

Let’s establish the context clearly.

This wasn’t:

  • A clean baseline
  • A low-testosterone environment
  • Or a “best-case scenario” for hair

This was the opposite.

Protocol:

  • JXL069: 0.5mg / 1ml topical — nightly
  • Dutasteride: 0.5mg daily
  • Testosterone: 200mg/week (TRT)
  • RU58841: 80mg a day
  • Ketoconazole shampoo 3x weekly

That level of testosterone puts me well above natural baseline — meaning:

👉 Higher androgenic pressure on the hair follicle

👉 A more difficult environment for regrowth or even maintenance

So the question becomes:

Can JXL actually do something meaningful… under pressure?


What JXL069 Is Actually Targeting

Most hair loss treatments today work by blocking the problem.

  • Finasteride → reduces DHT
  • Dutasteride → reduces DHT more
  • RU58841 → blocks androgen receptors locally

They all operate in the same framework:

👉 Reduce androgenic damage

JXL069 is different.

Instead of blocking hormones, it’s thought to act at the cellular metabolism level, specifically:

  • Influencing pyruvate utilization
  • Altering mitochondrial activity
  • Shifting stem cells from an inactive → active state

The key idea:

Hair follicle stem cells don’t disappear — they become inactive.

If you can shift their metabolic state, you may be able to:

👉 Reactivate the follicle

👉 Push it back into the growth phase (anagen)

This is the same mechanistic direction being explored with compounds like PP405.


The Results at 12 Weeks

Let’s be precise.

1. Hairline (Vellus → Terminal Shift)

There are visible small hairs along the hairline that appear:

  • Thicker
  • More pigmented
  • More structured than baseline

This suggests a potential transition — but:

This is not conclusive proof of regrowth.

It’s a signal, not a conclusion.


2. Crown Density

This is where things get more interesting.

Comparing week 1 to week 12:

  • Slight improvement in perceived density
  • Less visible scalp in certain lighting

But here’s the reality:

  • Lighting matters
  • Angles matter
  • Bias matters

So I’ll say this clearly:

Subjectively: it looks better

Objectively: it’s suggestive, not definitive


The Most Important Variable: Androgen Load

This is the part most people ignore.

Running 200mg testosterone per week means:

  • Elevated serum testosterone (~1000–1100 ng/dL range)
  • Increased androgenic signaling at the follicle

Under these conditions, you would expect:

👉 Acceleration of hair loss — not stabilization

So even maintaining density is meaningful.

And if there is any improvement?

That suggests JXL may be:

👉 Acting independently of androgen suppression

👉 Potentially “holding the line” under stress


Why This Matters

This is where things get interesting conceptually.

We’re moving from:

Old model:

“Block the hormone, slow the loss”

To:

New model:

“Reactivate the follicle itself”

That’s a completely different paradigm.


Important Disclaimer (Read This)

JXL069 is:

  • Experimental
  • Not clinically approved
  • Lacking long-term human safety data

Especially regarding:

👉 Systemic absorption

👉 Long-term metabolic effects

This is a personal experiment, not medical advice.


What Happens Next: 30-Week Update

12 weeks is not enough.

Hair growth operates on cycles — not timelines we prefer.

So I’m continuing this experiment to:

👉 30 weeks total

Same protocol. No changes.

Because the real question isn’t:

“Did something happen in 12 weeks?”

It’s:

“Does this compound sustain and build over time?”


Watch the Full Breakdown (With Visual Evidence)

This article gives you the structure.

But the full context — including:

  • Before & after images
  • Crown analysis
  • Hairline close-ups
  • My honest interpretation

…is in the video.

👉 Watch the full 12-week update here:


Protocol Breakdown & Resources

One compound often discussed in hair-loss research communities for protecting hair follicles from androgen activity is RU58841.

RU58841 is a topical androgen receptor antagonist, meaning it works locally at the scalp to reduce the ability of androgens like DHT and testosterone to bind to hair follicle receptors.

Unlike systemic medications such as Finasteride or Dutasteride, RU58841 is designed to act directly at the follicle level, which is why many people include it as part of a broader hair-loss prevention protocol.

Because RU58841 is typically sold for research purposes, sourcing a reliable supplier is important.

One supplier frequently used in the hair-loss community is Anagen Inc, which provides laboratory-grade research compounds.

You can find their RU58841 solution here:

RU58841 Solution (50 ml)

If you decide to purchase from them, you can use the discount code:

(Disclosure: the link above is an affiliate link that helps support the research and educational content on


Final Thought

Most people online are trying to sell you certainty.

I’m showing you uncertainty — in real time.

Because that’s where the truth usually is.


If you want to follow the 30-week update and future experiments:

👉 Subscribe on YouTube

👉 Or follow along here on the site

This is just the beginning.

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Philippe Boissard
Philippe Boissard

Philippe Boissard, M.Sc., is a hair loss researcher and author. He breaks down the science of androgenetic alopecia and the treatments men actually weigh up, working from the primary literature rather than marketing claims. New here? Start with his guide to how hair loss actually works.

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