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Topical Finasteride & Minoxidil Spray: Everything You Need to Know

arash mostaghimi

Reviewed by Arash Mostaghimi, MD

Written by Our Editorial Team

Published 09/06/2022

Updated 08/31/2022

Here you’ll find everything you need to know about this hair loss treatment—how it works, how to use it, and how to get best results. Let this be your guide.


This spray is a mixture of two clinically-proven ingredients to treat hair loss—finasteride and minoxidil. Finasteride reduces DHT (the hormone that causes hair loss in men) in the scalp and stops more hair from falling out while minoxidil promotes hair growth by reactivating dormant follicles.

Follow these steps once a day and you’ll be good to grow.

1. Spray it on
  • Hold the bottle 2 to 3 inches from the head, parting the hair slightly so the solution can reach the scalp, and spray only the prescribed number of sprays divided across the 4 main zones of hair loss:
      ▪ the crown of the head
      ▪ the top of the head
      ▪ each side of the front of the head (where the hairline typically starts to recede)
  • While it may feel like you need more sprays, this formula is designed to work without having to drench the head.
  • Even if you’re not currently experiencing hair loss in all of these areas, it will often spread and affect them eventually. Applying the spray this way can help to prevent the spread.
  • Spray one zone at a time, massaging the solution into the scalp between sprays.
2. Rub & repeat
  • Once you’ve sprayed on the solution, massage it into the scalp. Repeat across the rest of the hair loss zones.
  • Quick tip, tip the head back slightly during steps 1 and 2 to avoid any solution running down the forehead.
3. Let it dry & wash hands
  • This is a scalp treatment, so be sure to let the solution dry so it can absorb properly into the scalp, especially if you apply before bedtime.
  • If you apply at night it’s ok to wash your hair in the morning, the treatment will have had enough time on the scalp to be effective.
      ▪ Another note to nighttime appliers: topical finasteride is not safe for women who are pregnant or trying to become pregnant—if that applies to your partner, do not share a pillow with them, and be careful to prevent their exposure.
  • Also, make sure you wash your hands well after you finish applying.
4. Practice patience
  • The solution starts working right away, but it will be at least 3-6 months before you start seeing the results.  If your hair looks the same after 3 months, that’s a success—you haven’t lost any more hair. Consistency is key so stick with it, and be sure to follow your provider’s recommendations. Results are on their way.

There are just a few more things to know before you get started.

  • Contrary to myths out there, you will not lose any extra hair by washing the scalp frequently so take good care of it while using this treatment. That means washing it (not just your hair) to avoid build up that could prevent the solution from properly absorbing into the scalp.

  • The minoxidil in this treatment helps kick start new hair growth and its first job is to make room for healthy new strands by shedding mature strands that were going to fall out anyway. Don’t be alarmed if you notice excess shedding when you start this treatment, it’s short term and isn’t usually noticeable for most people.

  • Always use this treatment as directed by your medical provider, spraying more solution in more areas won’t make it any more effective and can increase the risk of side effects.  If you experience worsening side effects, reach out to your provider.

  • Some itching or dryness of the scalp can occur early on as you get used to the treatment.

Visit Topical Finasteride & Minoxidil Spray for detailed safety information.

Want to know more about how the hair growth cycle works? We’ve got you.

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Before/after images shared by customers who have purchased varying products, including prescription based products. Prescription products require an online consultation with a healthcare provider who will determine if a prescription is appropriate. These customers’ results have not been independently verified. Individual results will vary. Customers were given free product.
Editorial Standards

Hims & Hers has strict sourcing guidelines to ensure our content is accurate and current. We rely on peer-reviewed studies, academic research institutions, and medical associations. We strive to use primary sources and refrain from using tertiary references. See a mistake? Let us know at [email protected]!

This article is for informational purposes only and does not constitute medical advice. The information contained herein is not a substitute for and should never be relied upon for professional medical advice. Always talk to your doctor about the risks and benefits of any treatment. Learn more about our editorial standards here.

Arash Mostaghimi, MD

Dr. Mostaghimi is an assistant professor of dermatology, director of the inpatient dermatology consult service and co-director of the Complex Medical Dermatology Fellowship at Brigham & Women’s Hospital.

His research focuses on understanding variations in dermatologic care and improving care delivery to optimize resource utilization, encourage patient autonomy and reduce disparities. 

His specific interests include understanding the interface between dermatology and other medical specialties, determining best practices for the treatment of orphan dermatologic conditions and characterizing dermatologic practice patterns, utilization and costs. You can find more about Dr. Mostaghimi on LinkedIn.

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