I am 23 years old and my doctor prescribed Minoxidil. Will my hair go back to thin after I stop? (photos)

Minoxidil only work as long as you keep using it.  If you use it for awhile and notice a gain in hair and you stop using it, then the gain (you got from the medication) will be lost.

Any treatment for hair growth, if the cause of loss is genetic, will cause the hair to revert to its normal state if you stop treatment.  Injections with progesterone and PRP may help give you permanent improvement.  I suggest you see a hair loss expert.  Best, Dr. Emer.

Without seeing your scalp up close, it is not possible to comment. In general, the term "thinning hair" refers to genetic hair loss. There are, of course, dozens and dozens of reasons to lose hair but genetic hair loss causes hair loss in the center of the scalp in women and the hair strands actually stand to get "thinner" - we call this process miniaturization. Minoxidil is only FDA approved for genetic hair loss. If you have genetic hair loss and use minoxidil AND get a benefit - the benefits will be lost once you stop using the minoxidil. Could you have another type of hair loss? It's possible but it's not possible to confirm that without seeing your scalp and knowing more details of your hair loss. Minoxidil can sometimes help other types of hair loss- but such use is said to be "off label". minoxidil is only approved formally for androgenetic alopecia.