The 3 hour time also includes washing and letting my hair air dry (the wash/dry takes about 45-55 minutes in total). That's why I said I can cut it down to 2 hours in a pinch, because I can use a hair dryer - I just prefer to let it air dry because my hair gets wavy when I use the dryer. From a dry head, my full process takes about 2 hours give or take 15 minutes. I apply a ton of concealer (Toppik fiber and spray fiber) in stages and style it as I go. I also have to clean thoroughly around the hairline to make the concealer as imperceptible as possible. I often tell myself that it's much like surgery, how careful and methodical I am about it lol.
I actually use Q-tips and tweezers to position every strand of hair exactly where I want it. Then I apply gobs of hair spray to hold it in place.
I've actually lost a good deal of hair the past 12-18 months, because the style I keep my hair in (a sort of combover) doesn't look nearly as good/full as it did 18 months ago as my density has further decreased (even with concealers) and also my temple recession has advanced, so I can't "cover" as many areas and still make it look full. It's becoming very difficult. I'm also pretty sure that using the amount of concealer I do is making my hair worse, because as you apply it and comb through, it pulls on the hair very harshly, and my hair falls out very easily. I'm pretty sure my rate of hair loss has increased in the past 18 months after being constant for 20+ years, and I feel it's likely attributable to these concealers (the spray fiber in particular).
As for why I go through all this, it's partly for the same reason everyone here wants to save/make their hair look fuller: because hair loss sucks. And some - probably the larger part - of it is because I am incredibly self-conscious and in no small part vain. Not conceited (I don't feel I am better than anyone else physically or otherwise, nor do I judge people on those factors), but yes, vain - I care a
lot about how I look.