nope, hindi siya tumitigas agad, no need to wash really, it's 100% removable, hindi kelangan kutkutin, dumidikit siya best sa kauri niya so get some more blutack or use the one you've already removed and collect pieces left sa head by "tapik tapik" gang sa sumama lahat ng natira dun sa pinangtapik mo, gets ba? hirap explain sa words.. parang rugby!!! but i don't think you'll have this kind of problem kasi madali lang talaga tanggalin, I've used it on practice kanina (mga kasinglaki ng thumbnail ginamit ko, pressed it sa upper left side of my snare drum head then viola! instant) tas nung tapos nako practice siyempre kelangan tanggalin, you don't want to leave it there, even moon gels will rot kapag iniwan buong gabi nakalagay sa drum, it dries out right? so SOP remove after playing.. un lang..