Highlighter is a new coming pens that can mark with thicker, with lighter ink cover key parts to do mark. After mark, it does not keep out live text after glance. Highlight pens are fluorescent agent. It meets ultraviolet (sun, fluorescent lamp, mercury vapor more) produces fluorescence effect, white, thus make out a dazzling fluorescent color feeling.

Highlight pens can be devided into water-based and oily two kinds. Water-borne pen and colored pens are similar, nontoxic but not easy to dry. And the coverage is bad, some items, and surface could not write up two kinds of color fold together can appear seems dirty. Oily pen is the synthesis of dissolved color with alcohol solvent, some sensitive person smell its flavor will produce swimmy. But it’s easy to write also easy to do, good, the price is also lower.