▁res in , ▁however , ▁over ▁time ▁the ▁materials ▁have ▁improved ▁and ▁now ad ays ▁false ▁l ash es ▁are ▁made ▁of ▁a ▁special ▁pl astic ▁fi ber ▁called ▁Poly but yl ene ▁T ere ph th al ate ▁( P B T ). ▁P B T ▁is ▁he ated ▁and ▁then ▁m old ed ▁into ▁the ▁desired ▁l ash ▁shape . ▁L ash es ▁that ▁are ▁made ▁from ▁this ▁material ▁are ▁strong ▁and ▁have ▁a ▁natural ▁gl oss y ▁she en . ▁Moreover , ▁they ▁also ▁retain ▁their ▁curl ▁better . ▁▁ ▁False ▁e y el ash es ▁and ▁semi - per man ent ▁e y el ash ▁extensions ▁both ▁enh ance ▁the ▁length ▁and ▁volume ▁of ▁e y el ash es , ▁although ▁they ▁differ ▁in ▁various ▁ways . ▁▁ ▁Classic ▁l ash es ▁are ▁a ▁ 1 : 1 ▁ratio ▁of ▁one ▁extension ▁applied ▁to ▁one ▁natural ▁l ash . ▁Hy brid ▁l ash es ▁are ▁classic ▁l ash es ▁and ▁volume ▁fan ▁l ash es ▁mixed ▁together . ▁Volume ▁l ash es ▁are ▁ 2 - 6 ▁thin ▁e y el ash ▁extensions ▁that ▁make ▁a ▁fan ▁shape ▁to ▁allow ▁for ▁a ▁look ▁of ▁full ▁fl uff y ▁l ash es . ▁M ega ▁volume ▁l ash es ▁are ▁ 1 0 ▁or ▁more ▁super - th in ▁e y el ash ▁extensions . ▁Pre - made ▁fans ▁are ▁ready - made ▁volume ▁e y el ash ▁extensions . ▁They ▁are ▁arranged ▁on ▁the ▁st icker ▁strip ▁for ▁easy