The kind-to-pocket-and-planet refills feature x2 refill cartridges in each box. Save with 2 refills for the price of 1 pencil! When your Micro Sculpt Pencil runs out, simply unscrew the cartridge barrel from the pencil handle and replace by screwing in the refill. You may find that Micro-Sculpt is a little hard on first use, this is due to the blend of Japanese Tree Wax within the formula that contributes to its long-lasting wear. We recommend warming the product up before use, to do this, twist up a small amount of the pencil and gently run it on the back of your hand to soften, this ensures a smooth gliding and tug free application on the brows.