Rogaine is the brand name for topical minoxidil, a medication that may aid hair growth.

Manufacturers initially developed Minoxidil as an oral blood pressure medication. However, a topical version of the drug came to market in 1987 as a hair growth treatment under the name Rogaine.

Rogaine allows people to apply minoxidil directly to areas where they are experiencing hair loss, from the back of the head to the beard. Minoxidil therapies are available in 2% and 5% strengths.

This article details the uses and efficacy of Rogaine.

Rogaine was developed to minimize the effects of scalp alopecia (baldness) by promoting new growth for pigmented, terminal hairs and limiting the scope of future hair loss.

Studies show that in adults over 18, 5% topical minoxidil treatments effectively promoted new hair growth and overall hair density.

However, long-term use of minoxidil is necessary to maintain its effects, and these may diminish at discontinuation. Hair regrowth may peak in the first year of application and slow thereafter.

How does it work?

While it is demonstrably effective, it is unclear exactly how Rogaine promotes hair growth and slows hair loss.

A common explanation is that it opens up the blood vessels in the scalp, which allows more oxygen, nutrients, and blood to reach the hair follicles. It may also enhance the ability of cells in the scalp to produce DNA.

Rogaine is typically safe for use; however, the alcohol in the topical application can cause skin irritation. Also, Rogaine may lead to the following side effects:

  • dry and irritated scalp
  • burning and itching scalp
  • scaling and flaking scalp

Due to Rogaine increasing a person’s sensitivity to sunlight, there is also a greater likelihood of them experiencing sunburn, so users should take precautions to prevent overexposure.

Some people using the higher strength 5% solution have reported excessive hair growth in places they do not want it, such as the forehead or cheeks.

People can also be allergic to minoxidil or other ingredients used in the medication.

If any of the following symptoms develop, a person should seek medical help and discontinue using the medication:

  • swelling in the face
  • heart palpitations
  • dizziness
  • nausea
  • weight gain
  • chest pain

Topical minoxidil may aid in promoting facial hair growth, although high quality research in this area is limited.

Anecdotal claims and small case studies suggest that it may help beard growth, but further study is necessary to assess its efficacy fully.

A note about sex and gender

Sex and gender exist on spectrums. This article will use the terms “male,” “female,” or both to refer to sex assigned at birth. Learn more.

Minoxidil treatments are equally effective in treating male and female-pattern baldness.

Experts do not recommend Rogaine for women who are pregnant or chestfeeding as there is insufficient information on how the medication could affect the fetus. Side effects tend to be rare, and Rogaine is generally considered safe.

Rogaine, the brand name for minoxidil, is moderately effective in stopping hair loss and somewhat effective in promoting new hair growth in both males and females.

It takes time to see the effects of this medication, and experts recommend that most people try it for several months to determine its effectiveness.

Any hair growth benefits from Rogaine will gradually disappear if an individual stops applying the treatment.