I have used the Liquid Paper products for as long as I can remember. I used to buy the little bottles with the brush, but they always seemed to get dried up and the brush would be coated with dried up paint until it became almost unuseable before long.
When they came out with the liquid paper pens, I was hooked. They are so easy to use and are much more accurate in placing the liquid cover up just where you want it.
The pen is plastic with a little hump on the side that you use for helping squeeze out the correction fluid. To get the fluid flowing you just press down on the tip and squeeze slightly. The correction fluid flows out in a small amount for a clean and neat correction. I usually only have to use one coat for a good coverage, but if a second coat is needed, I just have to wait a few seconds for it to dry and apply more. Although you can slightly detect the correction, it is acceptable for most work I do. I have never had a problem with the tip clogging, but occasionally I have to wipe some excess fluid off the tip.
This long lasting pen holds 7ml, 24 fl oz. With the cap on the pen, it keeps the liquid from drying out. I have never had a pen dry up on me yet. I am never without a Liquid Paper Correction Pen - after all, no one's perfect!