Scallop Front - This front is designed to be slightly wavy along the hairline giving a realistic look.  This type of front lasts the longest.  Underventing cannot be done with this front.

Lace Front Materials

All Star Lace/Mono Graft Welded Mono - This is  the same material as fine mono, but uses finer, more closely-woven threads.  It is used for welded mono lace fronts and mono graft systems.  Underventing cannot be done with this front.

French Lace - A "theatrical" lace material used to create a very natural front hairline.  It may also be used for the entire foundation.  Underventing cannot be done with this front.

Skin Lace - A very thin polyurethane plus gauze material.  It is very natural looking, but very delicate and short-lived.  Underventing cannot be done with this front.