Makeup Primer

Sharpener

A small tool used to shape and refresh the tip of pencil-format products like liner, lip liner, and brow pencils.

A black dual-hole cosmetic pencil sharpener next to a sharpened pencil with curled wood shavings, on a plain white background

What it is

A cosmetic sharpener works the same way as a stationery pencil sharpener but is sized and shaped for the specific diameters of makeup pencils - liner, lip liner, brow pencil - which are usually wider and softer than a standard writing pencil.

How it works

An angled blade shaves away the outer wood or plastic casing and worn product to expose a fresh tip. Because cosmetic pencils are softer than graphite, a dull or low-quality blade tends to crumble or tug the product instead of cutting it cleanly, which wastes more product per sharpening than a sharp blade would.

How to choose one

  • Match the barrel size - many sharpeners include two openings for standard and jumbo pencils, since brow and lip pencils are often a different diameter than eyeliner.
  • Metal blades generally outlast and out-cut plastic ones, especially on drier, firmer pencil formulas.
  • A built-in shavings catcher keeps sharpening from scattering product residue, useful for travel.

How to use it

  1. Use the opening that fits the pencil snugly. A loose fit lets the pencil wobble and sharpen unevenly.
  2. Turn the pencil, not the sharpener, in a few slow, light rotations.
  3. Stop as soon as there's a clean tip. Every extra turn shaves away product you'd otherwise use.
  4. Wipe the tip on a tissue to remove shavings and any crumbs of product before putting it near your eyes or lips. See Eyeliner and Lip Liner.

Care and when to replace

  • Clean the blades every few uses. Soft pencil residue builds up on the blade, making it tug rather than cut - a cotton swab dipped in rubbing alcohol removes the residue and disinfects the blade.
  • Empty the shavings regularly so they don't fall back into the opening.
  • Replace it when pencils start to crumble or tear instead of shaving cleanly.

Common mistakes

  • Using a dull blade well past its useful life, which wastes far more product per sharpening than replacing the sharpener would cost.
  • Sharpening a pencil that's still cold and stiff (e.g., right after storage in a cold room), which can cause the tip to crumble rather than shave cleanly - letting it sit at room temperature first helps.
  • Over-sharpening to a fine point on formulas meant to be applied blunt, which changes how the product deposits and can make it harder to control.