Cosmopak has introduced a revolutionary new twist pen featuring an ingenious shut off valve, providing 100% absolute airtight sealing: no leakage, quick priming, and a constantly accurate dosage.  The pen has been designed for a variety of applications including liquid eyeliners or shadow, but enjoys a wide range of possible uses.

Since its emergence as a packaging category the twist/click pens market has been dominated by products for lips – typically glosses, and concealers. The RF10 series opens the category up to any volatile formula or low viscosity bulks. This pen is best suited for liquid eyeliners and liquid eye shadows, as the shut off valve allows exact dosing so it's able to be used on the eyes. It's a breakthrough with regard to application systems.

The new RF10 series (in a 2.5ml capacity) also features an elongated design that replicates the feel of a brush but with the added feature of containing and dispensing the product inside.