Go to fakespot.com and check out those Amazon reviews for the products you are considering. Sometimes things are not as they seem. I might even use the old adage that if something is too good to be true it pribably isn't.
OTC stuff is for male pattern baldness, not aa. My derm says that if Rogain doesn't work, then prolly no OTC stuff is going to. There are many unscrupulous companies & sellers who prey on peeps with aa who are anxious for a cheap & quick cure for hair loss.
If you read these discussions, you would know that only remission is possible for almost total scalp hair loss from aa or its siblings - whether spontaneous or with the help of something like Xeljanz or squaric acid treatment; very expensive and only from your derm. And, those only work as long as you use them.
If it is a mild case of aa with only a few spots, like when it is just starting, the topical treatment and steroid injections from the derm do get results.
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