Well, there you have it, folks. Without legitimate clinical evidence, there's no way of telling whether castor oil is the hair-care cure-all some people claim it is. That being said, as long as you consult your doctor first, there should be no problem with you experimenting with it on your own to see how and if it works for you. At the end of the day, we're not calling anyone a liar, but facts are facts, so until there's more science-backed information on the subject, it's best to take any glowing tesimonials with a grain of salt.

However, ketoconazole is still not FDA approved for hair loss treatment, which means it cannot be endorsed or marketed as such. Put simply, ketoconazole likely curbs hair loss, but additional research is needed for the FDA to give it approval. While it is safe to use as a supplement to our top picks, we wanted to recommend products with as much scientific backing as possible. So, we stuck with FDA approved minoxidil or FDA cleared laser treatments. But we’ll keep a close eye on products like ketoconazole shampoos and update as new research appears.
Testosterone replacement is becoming popular for men. Cotsarelis warns that this may accelerate hair loss. Propecia might help -- but because it prevents testosterone breakdown, it might affect the dose of male hormone replacement therapy. Cotsarelis warns men taking both Propecia and testosterone replacement to make sure their doctor carefully monitors their testosterone levels.
For as long as men have been fretting over their expanding foreheads, they've been scrounging for hair loss treatments. From hippo fat pomades to the urine of young foals, history is full of just-so-crazy-they-might-work concoctions. They didn’t work. And a quick Googling reveals that most of the products and services marketed today are only slightly less absurd.
The other main hair-loss treatment that was recommended by all four dermatologists I interviewed is finasteride, often called by its brand name Propecia. This FDA-approved medication is only available with a prescription, but these days, it’s found as a generic and ordered online after a virtual consultation, through start-ups like Hims, Keeps, and Lemonaid.
That meant new products like Hims and Keeps were out.Hims and Keeps are relatively new companies that allow you to set up a subscription for hair loss treatments. Both offer finasteride (after an online consultation with a doctor) or 5 percent minoxidil. However, their minoxidil solutions contain propylene glycol, so we cut them from consideration.
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