i think foam is good for the hairline but i find it hard to believe if people have prety thick hair and its longer that it can possibly absorb well. i guess if your hair is to thick for the foam in the first place you shouldn't be on it, i will say this i been on it 2 times a day for 5 months for the hairline and i noticed the peach fuzz coming in at around 2 and a half months and gradually coming in more and more. ive also seen sheds off and on of small eyelash size hairs which i believe are starting to finally turn terminal. so my personal recommendation is if your hairloss is early in your hairline i think in 6 months you can gain back quite a bit of hair but don't expect slick baldness to regain anything. my hairline at the start was about 1.5 on the norwood scale low in the middle but bout half inch to 3/4 inch pushed back on the sides. now i would say the sides have come down half of an inch the uperpart of that half inch being more terminal hairs and lower part still vellus. im hoping in another 5-6 months that those vellus hairs all turn terminal. its exciting to me to think for the first time in human history that young men starting early can regrow back temple hairs cuz of how easy the foam is to apply to it, b4 the release of the foam it wasn't realistic to apply minoxidil to the hairline because it would drip down into the face.