Yes, Brow Cheat is a refillable pencil. When it runs out, a new refill twists and clicks into the brow tool. You keep the same slim case and the spoolie on the other end instead of replacing the whole pencil. Each fill holds 0.05 g and ends in a micro-precision angled tip made for fine single-hair strokes.

Brow Cheat is the finer tool: a micro-precision angled tip that draws slim strokes that look like single hairs in sparse patches. Brow Lift is Charlotte Tilbury's cream-wax pencil that shapes and defines for a fuller, fluffier brow. Both are refillable angled-tip pencils with a spoolie. Choose Brow Cheat for gaps and natural-looking hairs, and Brow Lift for a bolder overall fill.

Match the shade to your natural brow colour. Medium Brown, with warm neutral undertones, suits mid-brown to dark brown brows, and Dark Brown suits dark brown brows. Natural Black has neutral undertones and suits black brows. If you sit between two, pick the lighter one, because the pencil builds up and reads softer than a drawn-in line.

Brush your brow hairs upward, then use short, light flicks to fill sparse areas so the strokes mimic natural hairs. Brush through with the spoolie to soften the colour. For extra hold and fullness, add a tinted brow gel, then set the hairs up with a clear gel. Keep the pressure light, because the tip is fine and precise and a little goes a long way.