Blender Pen Refill 1 oz. glycerin 2 oz. distilled water 3/4 teaspoon rubbing alcohol Mix ingredients together.Gently pull tips out of blender pen (both ends). You can generally pull the tips out with your fingers but if not, use tweezers (dont ruin the tips). Soak tips in fluid for a few hours. If tips look very dry, soaking overnight will produce better results. Gently push one tip back into the marker. Using an eye dropper, fill barrell with liquid. Replace 2nd tip back into the marker.