Is It Okay to Apply Minoxidil to Your Beard?

One of the questions I get often in the clinic is about the “effect and scope of hair loss medication.”

If your beard grows sparsely or feels like it grows slowly, some of you may think of hair loss medication.

Since it is already well known as a treatment for scalp hair loss, the question naturally follows: “Can I apply this to my beard?”

Because this is not a topic that can be answered simply with “no” or “yes,”

today I’d like to take some time to answer questions about minoxidil and beards.

Is It Okay to Apply Minoxidil to Your Beard? Summary

Minoxidil is not a beard-specific medication¹
Its effect on increasing the number and density of beard hairs is limited.²
Some change in the growth rate and thickness of existing beard hairs may be possible.¹²
Skin irritation on the face and unwanted increase in fine hairs are common concerns.
Setting expectations before use is the most important thing.

Was minoxidil originally made for beards?

The short answer is no.

Minoxidil was not developed from the beginning with the goal of treating beards or hair. During its use as a blood pressure medication, increased body hair was observed, and it was later used for hair loss treatment¹.

Because of this background, it is understandable that people would become interested in using it on areas other than the scalp, especially the beard. However, it should first be noted that this medication was not originally intended for beards.

Then is there no point in applying it to the beard?

It is hard to say that it is completely pointless.

What matters here is what patients mean by “effect.”

Many people hope for the following:

• Filling in areas where there was no beard before

• A noticeable increase in overall density

However, minoxidil is not a medication that creates these kinds of changes².

It works more by stimulating the activity of hair follicles that already exist rather than creating new follicles where none were present.

What changes are actually observed?

In clinical practice, the two most common changes are:

One is the growth rate.

Some people feel that the time it takes for beard hair to grow back after shaving becomes shorter, and this can be explained by the hair follicle staying in the growth phase longer¹.

The other is the thickness and color of the hair.

Some people feel that hairs that were originally thin and light become a little thicker and darker over time.

Not every fine hair turns into a thick beard hair, but changes in the direction of making existing hair more noticeable are observed in some people.

Why do these changes happen?

Minoxidil is known to shift hair follicles from the resting phase to the growth phase and extend the growth phase¹².

During this process, hair follicle activity increases, which can lead to the speed and thickness changes mentioned above.

However, this effect is limited because it only targets existing hair follicles.

It is difficult to expect an effect that changes the number, distribution, or line of the beard.

Q1. Are there no side effects if used on the face?

This is just as important as the effect.

Because facial skin is much thinner and more sensitive than scalp skin, reactions to minoxidil can appear more easily.

The most common clinical side effects are skin irritation symptoms such as stinging, dryness, flaking, and redness.

These discomforts are especially common with liquid formulations¹.

Q2. Can hair increase in unwanted areas?

Yes, it can happen fairly often.

Minoxidil can affect not only the area where it is applied but also the surrounding areas, so there are quite a few cases where using it on the beard area also made fine hairs on the cheeks, sideburns, or temples darker.

For people who are particularly sensitive to appearance changes, this can become an unexpected inconvenience.

Q3. Can there be systemic effects as well?

The frequency is low, but it is possible.

If a large amount is applied to the face or used repeatedly under occlusion, absorption may increase, and in such cases, an increase in fine hair in areas other than the face has been reported¹.

In most cases, this is less a problem with the medication itself and more an issue related to the method of use and dosage.

Item	Description
Number of beard hairs	A clear increase is difficult to expect
Beard density	Limited change
Growth rate	Noticeable in some cases
Hair thickness	Change mainly in existing hairs
Skin irritation	Relatively common
Increase in fine hairs	A realistic side effect

So, what about using minoxidil on the beard?

It is not completely impossible,

but the range of effects you can expect is clear.

If you start with this in mind,

you may be able to greatly reduce disappointment from “it works less than I thought.”

This has been Kim Jin-oh, time to grow hairhair.

Pilsaengsinmo (必生新毛).

Written by: Kim Jin-oh, New Hair Plastic Surgery (Public Relations Director, Korean Association of Plastic Surgeons / Academic Director, Korean Society of Laser Dermatology and Hair)

References

1. Ingprasert, S., Tanglertsampan, C., Tangphianphan, N. et al. (2016) ‘Efficacy and safety of minoxidil 3% lotion for beard enhancement: A randomized, double-masked, placebo-controlled study’, Journal of Dermatology, 43(8), pp. 968–969.

cited:"The present study aimed to compare the efficacy and safety of minoxidil 3% with placebo in beard hair stimulation."

2. Messenger, A.G. and Rundegren, J. (2004) ‘Minoxidil: mechanisms of action on hair growth’, British Journal of Dermatology, 150, pp. 186–194.

cited:"Minoxidil may also cause prolongation of anagen and increases hair follicle size."

[This post is written directly by a board-certified plastic surgeon for informational purposes in accordance with Article 56, Paragraph 1 of the Medical Service Act. Hair transplant surgery and treatment may have side effects, and you should make a careful decision through consultation with a specialist.]

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