A deeper dive
DHT: separating fact from fiction.
What DHT is, how it shrinks hair follicles in men and women, why it can thicken a beard while thinning the crown, and what your real options are, with the research cited.
This is testosterone.
Nineteen carbon atoms arranged in four fused rings, the steroid skeleton every androgen shares.
5α‑reductase aims at one bond.
The double bond between carbons 4 and 5, in the first ring. It's the only thing the enzyme changes.
Two hydrogens are added.
The enzyme breaks that bond and adds a hydrogen to each carbon. C₁₉H₂₈O₂ becomes C₁₉H₃₀O₂.
Meet DHT.
A flatter, more stable molecule that binds the androgen receptor more tightly and holds on longer than testosterone. At the hair follicle, it's the androgen that matters most.
Where DHT is made.
DHT, or dihydrotestosterone, isn't produced by a single gland. It's made locally, in the tissues that need it, wherever the enzyme 5α‑reductase meets testosterone. Roughly 10% of the testosterone your body produces each day takes this path.
There are two main forms of the enzyme, and they live in different places. That detail explains why finasteride works on hair, and why the scalp is such a specific target.
| Enzyme | Where it's found | What blocks it |
|---|---|---|
| Type 1 | Skin, sebaceous (oil) glands, liver | Dutasteride; saw palmetto in lab studies |
| Type 2 | Hair follicles, prostate, genital skin | Finasteride, dutasteride; saw palmetto in lab studies |
How DHT causes hair loss.
In genetically sensitive follicles, DHT binds to androgen receptors in the dermal papilla, the cluster of cells at the base of each hair that directs its growth. From there, three mechanisms compound each other.
Follicle shrinkage
With each cycle the follicle gets smaller. Thick, pigmented terminal hairs are replaced by fine, short, pale ones: miniaturization.
A shorter growth phase
Anagen, the growing phase, gets shorter while the resting phase stretches out. Less time growing means shorter hairs and more shedding.
Less blood, fewer nutrients
As follicles shrink, the small vessels feeding them regress. Starved of supply, cells slow down and eventually go dormant.
Each cycle compounds the last, which is why hair loss is gradual, and why the earliest stages are the easiest to protect.
The beard paradox.
Here's the part most brands skip. DHT doesn't harm every follicle. On the face and chest, it's the signal that turns fine hair into a full beard. On the crown and temples, the same hormone slowly shuts follicles down. Researchers call this the androgen paradox, and it's why a man can grow a thick beard while his hairline recedes.
The difference is local: follicles in different parts of the body respond to DHT in opposite ways, programmed largely by genetics.
DHT thickens
Androgens drive beard growth from puberty onward. Beard follicles convert testosterone to DHT readily.
DHT miniaturizes
At the crown and temples, the same signal shortens growth and shrinks the follicle. The back and sides are largely resistant.
That's why our Hair Oil is where the DHT-blocking pair, saw palmetto and pumpkin seed, does its work: on the scalp, alongside rosemary and bhringraj. Our Beard Oil shares the same botanical base in a lighter blend, made to condition facial hair and the skin beneath it, not to block the hormone your beard grows on.
DHT, or something else?
Male and female pattern hair loss, “DHT hair loss” and androgenetic alopecia are the same condition. But not all hair loss is hormonal, and the pattern is the biggest clue.
| Type | What it looks like | Common causes |
|---|---|---|
| Androgenetic | Patterned: temples recede into an M, crown thins, sides stay full. In women, widening at the part. | DHT plus genetic sensitivity |
| Telogen effluvium | Diffuse shedding all over, often sudden, a few months after a trigger | Stress, illness, surgery, crash dieting, deficiencies |
| Alopecia areata | Smooth, round patches | Autoimmune; see a dermatologist |
Losing 50 to 100 hairs a day is normal. If your shedding is sudden or patchy, see a doctor before reaching for any DHT treatment, natural or not.
Who's affected.
Androgenetic alopecia (AGA) is the most common form of hair loss in both men and women. AGA is considered to be responsible for at least 80% of all cases of hair loss globally.
The androgen receptor gene sits on the X chromosome, which everyone inherits at least one copy of from their mother, but dozens of other genes contribute too. Look at both sides of the family.
Roughly half of men show some pattern hair loss by age 50, often starting at the temples. It's common in women too, usually showing up as a widening part or thinning on top.
What the studies actually found.
More research is always better, but the current studies look very promising.
In a review of saw palmetto studies, 83.3% of patients showed improved hair density. The review included both oral and topical use.
Saw palmetto review · PubMed ↗In a 24-week pumpkin seed oil capsule trial, average hair count rose 40%, compared with 10% for placebo.
Pumpkin seed oil trial · PubMed ↗In a six-month trial of 100 participants, rosemary oil and minoxidil 2% produced similar hair-count gains. Rosemary caused less scalp itching.
Rosemary oil trial · PubMed ↗Each statistic links directly to its source, with the full references below.
The classic options
Every approach trades off strength, access and side effects. Here's what the current landscape looks like.
| Option | How it works | Access | Trade-offs |
|---|---|---|---|
| Finasteride | Blocks 5α‑reductase. 1 mg daily lowered scalp DHT by about 64% in one study. | Prescription | Most proven. Sexual side effects in a minority of users; mood changes on the label. |
| Dutasteride | Blocks both enzyme types; lowers DHT further than finasteride. | Prescription; off-label for hair in many countries | Stronger, with a similar side-effect profile and a much longer half-life. |
| Minoxidil | Doesn't touch DHT. Extends the growth phase and enlarges follicles; originally a blood-pressure drug. | Over the counter | Gains fade if you stop. Irritation, early shedding, unwanted facial hair. |
| DHT Defense | Natural DHT blockers: saw palmetto and pumpkin seed inhibit 5α‑reductase, the same enzyme finasteride targets, plus rosemary and bhringraj for the scalp. | Order and apply | Growth weaker than pharmaceuticals, no side effects. |
Should you drop minoxidil or finasteride?
Generally, no. Especially if directed by a medical professional.
If a prescription is working and you tolerate it, natural blockers are no reason to stop. Talk to your doctor before changing anything.
If you're early in hair loss and prefer a gentle start, or you've felt side effects and want an alternative, a natural approach makes sense. Saw palmetto and pumpkin seed work on the same enzyme; rosemary and bhringraj (a staple of Ayurvedic practice for over 3,000 years) support the scalp.
Natural remedies are weaker than pharmaceuticals. At the same time, there are no side effects, and you can use them whenever it suits your routine.
Where's your hairline today?
Drag the scale to match your scalp. We'll tell you honestly whether DHT Defense makes sense for you.
This scale follows the receding-hairline pattern. If your thinning shows up as a widening part or less density on top, which is more common in women, the early stages are still the best time to start: photograph your part line today, and see a doctor if the thinning is advanced or sudden.
Stage 1 · No recession yet
Your hairline is intact. If hair loss runs in your family, this is the easiest time to act: protecting follicles is simpler than reviving them.
Shop the hair oil →Stage 2 · The M is starting
Follicles at the temples are miniaturizing but still active. This is the window natural DHT blockers are made for.
Shop the hair oil →Stage 3 · Visible recession
Start now and track it: take a photo today in the same light you’ll use later. Some people notice a change in 8–16 weeks, but give it up to six months before you judge. Some people at this stage also check in with a doctor.
Shop the hair oil →Stage 4 · Temples and crown
Natural blockers can support your scalp, but at this stage it’s worth talking to a doctor about your options too.
Shop the hair oil →Stage 5 · Thinning between
Plants won’t bring back hair that’s been gone for years. A dermatologist is your best next step; DHT Defense can support the hair you keep.
Shop the hair oil →Stage 6 · Front and crown joined
A dermatologist or transplant consult is the right move here. DHT Defense can be part of caring for the hair you have left.
Stage 7 · Horseshoe pattern
At this stage, a topical oil won’t change the picture. Talk to a specialist about transplant options.
- Evron E, et al. Natural hair supplement: friend or foe? Saw palmetto, a systematic review in alopecia. Skin Appendage Disord. 2020. PMID 33313047
- Cho YH, et al. Effect of pumpkin seed oil on hair growth in men with androgenetic alopecia. Evid Based Complement Alternat Med. 2014. PMID 24864154
- Panahi Y, et al. Rosemary oil vs minoxidil 2% for the treatment of androgenetic alopecia. SKINmed. 2015. PMID 25842469
- Drake L, et al. The effects of finasteride on scalp skin and serum androgen levels in men with androgenetic alopecia. J Am Acad Dermatol. 1999. PMID 10495374
- Hamada K, et al. Differences in testosterone metabolism by beard and scalp hair follicle dermal papilla cells. 1993. PMID 8287580
- Inui S, Itami S. Androgen actions on the human hair follicle: perspectives. Exp Dermatol. 2013. doi:10.1111/exd.12024