Beard Growth Kit: What the Evidence Supports

Last verified November 2, 2026. Every claim on this page links to the source we checked. Where the evidence is thin, we say so.

This page is general information, not medical advice.

The short answer

Only one beard-growth option has a placebo-controlled trial behind it: topical minoxidil. In that study, 48 men used a 3% minoxidil lotion or a placebo on the face for 16 weeks, and hair counts went up more with minoxidil^{1, 2}. That is one small, short trial. Using minoxidil on the face is off-label: the over-the-counter product is approved for the scalp, and its label says not to apply it to other parts of the body^{2, 4}. Talk to a doctor or pharmacist first, especially if you have heart disease or take blood pressure medicine. Microneedling, beard oil, castor oil and "beard vitamins" have no beard trials we could find. Your genes and hormones set most of what is possible^{3, 5}.

What changed on this page

An earlier version of this page offered a do-it-yourself "kit" of a microneedling pen, minoxidil, beard oil and oral castor oil, with needle depths to try on your face. We have removed the depth advice, the castor oil recommendation and a celebrity protocol video, because we could not find evidence to support them. Our microneedling guide reached the same conclusion about microneedling for beards.

Regulatory status

• Topical minoxidil is sold over the counter in the US to regrow hair on the top of the scalp. The 5% label is for men only, says not to use it under 18, and says "do not apply on other parts of the body." It lists "unwanted facial hair growth" as a reason to stop⁴. Using it on the beard is off-label².
• Microneedling devices: no microneedling device is authorized by the FDA for home sale or cleared for hair growth. Our microneedling guide has the details and sources.
• Beard oils are cosmetics. Beardbrand, a large beard care brand, says on its own product page that genetics determine beard growth and topical products can't change that{R(5)}.

Evidence map: graded by claim

Grades: A consistent randomized trials or meta-analyses. B at least one randomized trial, but small or short. C uncontrolled studies or case reports only. D no direct studies we could find.

Claim	Grade	Best evidence	What it means for you
Topical minoxidil increases beard hair in men	B	One randomized, double-masked, placebo-controlled trial: 3% lotion twice daily for 16 weeks in 48 men (46 finished). Hair counts, self-assessment and photo scores improved; hair thickness did not1, 2.	The only option with a controlled trial. Small and short.
Minoxidil helps when testosterone is already high	C	Uncontrolled study of 16 transgender men on testosterone with incomplete beards: 2% minoxidil once daily for 6 months raised chin and upper-lip hair scores3.	Supports the idea, but no placebo group.
Beard gains last after stopping minoxidil	D	Not studied. The 2024 study authors say this still needs testing3.	Assume gains may fade if you stop.
Microneedling grows beard hair	D	No beard trial. A 2020 review found only a case report of new beard hair near a healing wound2.	Unproven for beards.
Microneedling plus minoxidil grows beard hair	D	No beard trial. The combination has trial support for scalp hair loss, covered in our microneedling guide.	Don't assume scalp results carry over to the face.
Beard oil makes a beard grow	D	No trials. The brand we checked says genetics determine growth5.	Useful for itch and dry skin, not growth.
Oral castor oil or "beard vitamins" help	D	No beard studies found.	Skip them unless a doctor finds a deficiency.

Minoxidil on the face: what to know

Minoxidil was first approved as a blood pressure tablet; the topical form came later for hair loss³. The beard trial used a 3% lotion, which is weaker than the common 5% men's product, applied twice a day for 16 weeks^{1, 2}. The transgender study used 2% once a day³. Neither study tested 5% on the face, and we don't give dosing advice here. A doctor or pharmacist can tell you whether it is suitable for you.

Side effects

• Skin irritation. Redness, itching and contact dermatitis are known side effects of topical minoxidil^{2, 3}. In the 2024 study, 1 of 16 people stopped after a week because of flushing and irritation³.
• Heart symptoms. The label says to stop and ask a doctor if you get chest pain, a rapid heartbeat, faintness or dizziness, and to ask a doctor before use if you have heart disease⁴. These warnings apply wherever on the skin you use it.
• Hair where you don't want it. Minoxidil can cause hair growth beyond the treated area². Wash your hands after applying it, and keep it away from your eyes⁴.
• Pregnancy and children. The label says it may be harmful if used when pregnant or breast-feeding, and to keep it out of reach of children. If it is swallowed, get medical help⁴. Let it dry before close contact with a partner or child.
• Flammable. The solution contains alcohol; keep it away from flames⁴.

See a clinician first if

• you have heart disease, low blood pressure or take blood pressure medicine
• you are under 18
• your beard hair is falling out in patches, rather than never having grown in. Patchy loss needs a diagnosis, not a growth product.
• you get chest pain, a racing heart or dizziness after starting, or the skin becomes sore or inflamed

Microneedling for a beard

Microneedling makes tiny punctures in the skin to trigger healing. It has trial support for acne scars, and for scalp hair loss when combined with minoxidil. For beards there is no controlled trial at all². Needling the face carries risks of infection, irritation and pigment changes, and deeper needling belongs in a clinic. Our microneedling guide covers the evidence, FDA status, needle depths used in trials and aftercare.

If you have already decided to try needling at home, a pen with sealed, single-use cartridges is easier to keep clean than a reusable roller. Our Derminator 2 review covers one such pen, including its specs, price and the fact that it has no FDA clearance.

Grooming while it grows

Most beards look patchiest in the first few weeks. A few things make that stage easier, even though none of them grows hair:

• Beard oil or a plain moisturizer for the itch and dry skin that put many people off in the first weeks. Most beard oils are a blend of plant oils such as jojoba with fragrance⁵; fragrance-free options are better for sensitive skin.
• Wait before you judge. Give it a couple of months without trimming the shape before deciding where it is patchy.
• Trim to suit what grows. A shorter, even length or a different style can hide gaps better than growing it long.
• Wash and comb regularly to keep the skin underneath clean.

If your beard has never filled in and you're curious about hormones, our guide to hair loss lab tests explains what a doctor might check. Genetics play a large part in how a beard grows^{3, 5}. Testosterone treatment is a prescription decision for a diagnosed problem, not a beard product.

Common questions

Does minoxidil work for beards?

In one 16-week placebo-controlled trial of 48 men, a 3% lotion increased beard hair counts^{1, 2}. That is encouraging but limited. It is off-label, and long-term results after stopping are unknown³.

Will the hair fall out if I stop minoxidil?

No one has studied this for beards³. Plan as if facial gains may fade.

Does derma rolling grow a beard?

There are no beard trials². See our microneedling guide for what the scalp studies show.

Do beard growth oils or vitamins work?

We found no trials. Even a major beard oil brand says topical products can't change how your beard grows⁵. Vitamins only help if you are deficient, which a doctor can test.

What about oral castor oil?

We found no study of castor oil for hair growth. Taken by mouth it is a laxative. We removed it from this page.

How long does a beard take to fill in?

It varies with age and genetics, and we found no good data on typical timelines.

Related

Read our microneedling guide, Derminator 2 review, hair loss lab tests and looksmaxxing guide.

References

Sources were checked on November 2, 2026.

1. Ingprasert S, Tanglertsampan C, Tangphianphan N, Reanmanee C. Efficacy and safety of minoxidil 3% lotion for beard enhancement: a randomized, double-masked, placebo-controlled study. Journal of Dermatology. 2016;43:968-969. We could not open this paper; details are as reported in references 2 and 3. Source
2. Almurayshid A. Review of topical therapies for beard enhancement. Indian Journal of Pharmaceutical Sciences. 2020;82(3) Special Issue 7:19-25. Source
3. Marinelli L, Bichiri A, Cagnina S, et al. Efficacy of topical minoxidil in enhancing beard growth in a group of transgender assigned female at birth individuals on gender affirming hormone therapy. Journal of Endocrinological Investigation. 2024;47:2843-2850. Source
4. DailyMed. Hair Regrowth Treatment (minoxidil topical solution USP 5%, men's extra strength), Drug Facts label. Meijer, packaged by Perrigo. Checked 2 November 2026. Source
5. Beardbrand. Beard oil product page and FAQ. Checked 2 November 2026. Source