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Know Minoxidil Side Effects in Advance and Use It Properly

MOMO Plastic Surgery · 모모성형외과 · June 21, 2023

Know Minoxidil Side Effects in Advance and Use It Properly After finishing a busy day and coming home, once you wash up thoroughly, dry your hair, and tidy up, there are days when...

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This page is an English translation of a Korean Naver Blog archive entry. For exact wording and source context, verify against the Korean archive original and the original Naver post.

Clinic: MOMO Plastic Surgery

Original post date: June 21, 2023

Translated at: April 24, 2026 at 4:04 AM

Medical note: This translation does not guarantee medical accuracy or suitability for treatment decisions.

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After finishing a busy day and coming home,

once you wash up thoroughly, dry your hair,

and tidy up, there are days when you notice

a large amount of hair scattered around you.

In the past, you might have simply brushed it off

without paying close attention, but from the moment

you truly become aware of it, it no longer feels

like an ordinary matter and can settle in your mind

and heart as something to worry about.

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Assuming you have normal hair, if more than about

50 to 100 strands of natural hair fall out per day,

or if your scalp keeps becoming oily, it gets itchy,

and scratching it causes abrasions, and in severe

cases even dandruff appears and does not go away,

these kinds of symptoms are considered evidence that

a condition of early hair loss has already begun.

It is said that the proportion of people suffering

and struggling with this type of condition is

increasing these days, and it affects men and women,

middle-aged people and young adults alike—regardless

of age or gender.

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In particular, the number of younger patients who

are highly interested in and attentive to outward

appearance has been rising rapidly lately, and it can

be said that they do not hesitate at all to visit

related facilities. They also seem to actively engage

in improving the areas they are concerned about.

There are various methods for treating areas where

natural hair has fallen out and been lost. These

include specialized shampoos that are easy to access

and useful more for prevention and care than for

treatment, medications that are taken for several

months and show improvement, and hair transplant

procedures that may involve a fairly large financial

burden but can be expected to produce dramatic

results. A well-known method also includes applying

a topical treatment.

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Today, before talking about using this product for

treatment, we will discuss minoxidil side effects and

share ways to use it properly. It was originally

developed as a drug for treating hypertension, and it

works by widening blood vessels to lower blood

pressure. However, it was discovered that as blood

vessels widen, more oxygen and nutrients are more

easily delivered, causing hair on the head and body

to grow. This effect was then used in reverse to

help treat hair loss, and by reducing the dosage, it

has now become a treatment method that is relatively

easily accessible.

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It comes in two forms: tablets and topical products,

and the formulations are further divided into gel,

foam, and solution at 2%, 3%, and 5%, which means

they can be used in the appropriate way depending on

gender and condition. The tablet form is also known

to be more effective than topical preparations, but

because it is chosen according to individual traits

and circumstances, it may be helpful to know this in

advance if you need to take tablets.

Symptoms of side effects from oral minoxidil may

include tachycardia, heart failure, headache, fluid

retention, itching, and sun allergy, and these

symptoms can occur as blood vessels widen. In

addition, hair may grow not only on the head but also

in unwanted areas such as the philtrum, arms and

legs, underarms, eyebrows, chest, back, or forehead.

There are also cases in which this hair growth

continued for up to six months even after stopping

the medication.

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Next, a representative side effect of topical

minoxidil is that shedding may occur. To explain it

simply, it refers to a state in which weaker hair

falls out so that healthy hair can grow anew. It is

used to address the loss of natural hair, but if a

large amount of hair suddenly falls out, you may

worry that things have gotten worse. Not everyone

experiences this, but depending on each person's

pattern, the resting phase may be brought forward, so

hair may fall out more quickly than usual. Also, when

applying the medication, the liquid may run down and

have a harmful effect on the area around the eyes or

the eyes themselves, causing vision to worsen or

creating a stinging sensation. For that reason, you

should cover the eye area as much as possible before

applying it.

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Among the oral minoxidil side effects described above,

hypertrichosis, that is, hair growth in unwanted

areas, is also known to occur with this type of

medication. In some cases, when applying the topical

form, the scalp may become itchy and dry, leading to

dandruff, and inflammation may also occur, although

of course this may happen for some individuals and

not for others. There is also a small chance of low

blood pressure, which can cause dizziness or

headaches due to feeling unwell. This medication

contains an ingredient called propylene glycol, which

can cause skin problems, and if the formulation runs

down, it may create bumps on the forehead, so it is a

good idea to check this in advance and keep it in

mind.

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The symptoms listed above are various minor and major

minoxidil side effects that may occasionally be

experienced, but they are not something everyone

will go through. Therefore, if you carefully

understand the instructions for use and follow them

properly, you will be closer to achieving satisfying

results.

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The proper way to use it to minimize minoxidil side

effects can vary depending on the medication, so be

sure to check the instructions. When using a topical

formulation, it should be applied while the hair is

completely dry, and gently rubbing it in as if

massaging can help promote blood circulation. That

said, touching it too much is not recommended, and it

is also advised to leave it on only for the

specified amount of time.

If healthy natural hair keeps falling out and being

lost, that alone is enough to cause physical and

mental stress. Taking or applying the medication may

be helpful, but if you do not follow the correct use

instructions or precautions, the condition may become

even worse than before, and you could face an

irreversible situation. So it is also important to

keep in mind that visiting a related medical

facility for detailed consultation and diagnosis can

be of greater help when dealing with the problem.

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