el ash ▁extension ▁services ▁can ▁range ▁from ▁$ 3 0 ▁to ▁$ 5 0 0 , ▁depending ▁on : ▁ ▁The ▁number ▁and ▁type ▁of ▁l ash es ▁being ▁used ▁▁ ▁The ▁skill ▁level ▁of ▁the ▁cos met ician ▁or ▁ ▁The ▁ven ue ▁where ▁the ▁extensions ▁are ▁applied ▁ ▁Because ▁an ▁average ▁person ▁might ▁have ▁anywhere ▁from ▁one ▁hundred ▁to ▁two ▁hundred ▁l ash es ▁per ▁eye , ▁it ▁can ▁take ▁from ▁one ▁to ▁three ▁hours ▁to ▁attach ▁a ▁full , ▁new ▁set . ▁The ▁amount ▁of ▁l ash es ▁one ▁can ▁put ▁on ▁var ies ▁upon ▁the ▁existing ▁natural ▁e y el ash es . ▁Because ▁we ▁lose ▁natural ▁e y el ash es ▁every ▁day ▁the ▁e y el ash ▁extensions ▁usually ▁last ▁between ▁ 3 – 4 ▁weeks ▁and ▁during ▁that ▁time ▁period , ▁natural ▁l ash es ▁start ▁falling ▁out ▁or ▁thin ning . ▁M aint aining ▁a ▁full ▁set ▁of ▁e y el ash es ▁requires ▁a ▁ref ill ▁every ▁ 2 – 3 ▁weeks ▁or ▁a ▁partial ▁set ▁every ▁four ▁weeks . ▁If ▁done ▁correctly , ▁there ▁should ▁be ▁no ▁damage ▁to ▁the ▁natural ▁l ash es . ▁It ▁is ▁important ▁to ▁find ▁a ▁trained ▁professional ▁to ▁preserve ▁l ash ▁growth ▁and ▁reduce ▁the ▁chance ▁of ▁eye ▁comp lications . ▁ ▁Training ▁and ▁cert ification ▁ ▁Prof ession als ▁trained ▁in ▁L ash ▁Art istry ▁go ▁by ▁various ▁titles ▁including ▁" L ash ▁Techn icians ," ▁" L ash ▁Art ists ," ▁and ▁" L ash