Reddit mentions of L'Oreal Professional Serioxyl Denser Hair Treatment, 3.04 Ounce

You'd probably get more benefit from stem since it is specifically for thinning and increases the amount of hair in a area vs minoxidil which is more for regrowing on bald spots. But you can use both together.

https://www.amazon.com/gp/product/B00NU4LW00/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

You can get it on Amazon:

https://www.amazon.com/LOreal-Professional-Serioxyl-Denser-Treatment/dp/B00NU4LW00/ref=sr_1_4?keywords=stemoxydine&qid=1573353007&sr=8-4

https://www.amazon.com/Kerastase-Densifique-Density-Fullness-Programme/dp/B01BLE985G/ref=sr_1_7?keywords=stemoxydine&qid=1573353007&sr=8-7

The Kerastase is 6ml/day (!!). The LOreal is 4 pipettes/day.

I'm sorry you're going through that, I feel your pain.

Have you had your insulin levels tested / do you have an idea if you might be insulin resistant? Insulin resistance can happen to anyone, regardless of your weight. When excess insulin is floating around in the body, usually excess androgenic hormones are produced, too — so it might be worth testing out your testosterone & other hormones too, if you haven't already (it sounds like you might have, if you're already on Spiro).

I've seen stuff like this posted around this sub lately:
https://thepcosnutritionist.com/resources/pcos-hair-loss/

With hair loss, it can be pretty difficult to pinpoint the root cause (I'm right with you, my hair has been shedding aggressively for over 4 years and I keep reaching new lows!). But maybe trying to determine what type of PCOS you have could be a good place to start. That's at least what I'm trying, so I'm not just continuing to throw a bunch of random treatments at it!

I think carbs, if they're coming from plant-based sources, are fine — but it's probably worth cutting back on sugar (I think pretty much everyone, PCOS or not, benefits from this!

If you're looking for more immediate cover-up solutions, keeping your hair short can definitely help with the illusion of thicker hair — that's what I've been doing. Also, Toppik seems to be a great product for filling in gaps on the scalp with keratin fibers that match the color of your hair. I'm also looking into this serum, to see if it will do anything: https://www.amazon.com/LOreal-Professional-Serioxyl-Denser-Treatment/dp/B00NU4LW00

Sorry for the info dump! You're definitely not alone — starting with lab work to try to pin down the root cause will hopefully save you time (and hair!).