Nope Clip ons can be taken out by you after a fun nite of partying and put back in the next morning...
Euro are these tiny cooper peices ( different colors to match the hair ) that your hair+ extensions are looped thru then the metal peice gets pressed down by this other thing and is held in place... Looks like a paint brush
U have to go back to the salon to get them removed, They should last about 3 months...for me its a 1 1/2 months cause my hair grows crazy fast
and yes it is VERY expensive