In my case it means:No hair on the pillow.No hair will come out if challenged (pulled) - I am doing quite harsh scalp massage a few times a day.No hair will come out when applying any topical.Rarely I notice a hair will come out deliberately.Otoh:I will lose unknown amount of small hair when washing, but assume it's only few.And I will lose few hair when applying (styling) gel (which is weird). This is on the behalf of cyclooxigenase inhibitor (I presume that this is the main course of action). I have male pattern baldness since about 25 years now. My hairline is about nw2 at best and I have lost some hair counts all over the top of my scalp. I have no bald patches except in the temporal areas (what is commonly called "temples" I presume). Also the hair diameters are smaller on top than in donor. I use finasteride >10 years, until 12 days ago minoxidil >10 years, and a bunch of diy stuff over the years, currently cox inhibitors (eucalyptus, thyme) and taurine topically.