After a monthofnoshampoo, thatoilwillhavecaught a goodamountofdeadskincells, dirt, andpossiblyevenbacteria, whichcouldstarttomakeyourscalpitchyandevensmellkindoffunky.
そのため、髪がすぐに脂っぽく、汚くなります。
I wouldsayifyougolongerthanabout a month, thatyoumayseesome, again, whatyouwouldgetissometimesodor, youwouldgetsometrappingofbacteriaonyourscalp.