Learn more about our revised in-office safety policies in response to the COVID-19 pandemic.

Flagship Office: 110 East 55th Street, New York, NY
Medical Treatment of Hair Loss

June 11th, 2021

Q: What are your thoughts on topical finasteride? I am hesitant to use this because I cannot find any good studies on this let alone what the potential side effects may be with prolonged use.

A: Although there are no controlled studies to date, our sense is that topical finasteride in the right formulation may be a good therapeutic option. Long-term it should be at least as safe as the oral formulation.

However, presently, we don’t use topical finasteride for the following reasons:

  1. The dosing and efficacy have not been worked out.
  2. The topical formulations are not regulated and therefore not consistent in dose.
  3. In order to be effective, topical finasteride must be absorbed to some extent in the bloodstream and so a similar side effect profile may exist as with the oral version.
  4. It is not clear that using it topically can increase the efficacy/side effect ratio (i.e., depression of serum DHT levels may be important for its effect).
  5. It may inadvertently be used by pregnant women.
Related Posts:



Rating:  1 Star2 Stars3 Stars4 Stars5 Stars  


Posted by
Updated 2021-06-11

Browse Hair Restoration Answers by topic:


Learn more about hair restoration

Hair loss has a variety of causes. Diagnosis and treatment is best determined by a board-certified dermatologist. We offer both in-person and online photo consults.

Provide your email to learn more.