I read this really eye-opening article a while ago that I thought might be helpful to someone. https://perfecthairhealth.com/the-ultimate-hair-loss-flowchart-why-we-lose-our-hair/ I think it gives good insight in a very simple, understandable way about alopecia. I don't have alopecia but I think the main thing that leads to age related hair thinning and alopecia is letting calcium build up over the years in the scalp to the point that it chokes the follicles of oxygen, causing them to miniaturize, so the best thing to do is to start preventing that effect while you still have all or most of your hair. It would also help to eat healthier and get your hormones in check if possible to reduce a lot of the inflammation that helps cause calcification and fibrosis. What do ya'll think of this? (Sorry if this was already discussed. I don't usually come in this section.) Edit: I no longer recommend using magnesium oil for hair regrowth on the scalp like a regular oil!!!!! It seems easy to overdose on supplemental magnesium when using it that way, since magnesium oil is (depending on the brand) extremely rich in supplemental magnesium. Using enough to massage your whole scalp would equate to using toxic amounts, since you're probably already getting some from vitamins, and with an upper safe limit of 350 mg for supplemental magnesium for adults - meaning magnesium from food doesn't count towards reaching that limit - it would become very excessive. You always want to stay generously below any upper limits that are set for supplements anyways, since you want to stay far away from problems. For example, I would keep the dose of magnesium that I'm getting from magnesium oil, magnesium spray, supplements + epsom salt COMBINED to only 35% of the upper limit or less per day, to stay nice and far away from that 350 mg. Magnesium sprays are usually much less concentrated, yet still good for pain, if that sounds hard but you want to use magnesium topically and as a supplement. However, always check the label. This dosage should be more than enough to cover any nutritional deficiencies in magnesium you may have. (It is questioned whether or not magnesium from magnesium oil, magnesium sprays or epsom salts is even absorbed or not. Research is needed. To be safe, I would still go by the guideline above in case it is absorbed, but if you feel you're truly deficient in magnesium, I would stick to using a supplement to increase my levels, instead of going the epsom salt/magnesium oil route.) My new recommendation is to eat a magnesium rich diet to get magnesium, to be safe, since food sources of magnesium do not count towards the upper limit (again, this only applies for supplemental forms of magnesium). Taking vitamins/laxatives with small to moderate amounts of supplemental magnesium added or using any of the things mentioned above in the right amounts does not sound unsafe, I just wouldn't use magnesium oil in excess by using it in unusual/unprescribed ways. The websites that I see recommending magnesium oil for scalp massages do not talk about/consider the risk of getting too much magnesium from magnesium oil, since they are not doctors or scientists. Excellent sources of dietary magnesium include beans and whole grains. Eat one or both daily for calcium to move to where it needs to be in your body! This will help a lot to protect your hair against calcification related hair loss.