The Rimmel London Brow Pro Micro 24HR Precision-Stroke Pen in 01 Blonde is designed to create precise, hair-like strokes for natural-looking brows. This brow pen aims to provide a micro-fine tip for detailed application. It delivers a blonde shade suitable for lighter hair. The formula is intended to be long-wearing, lasting up to 24 hours. It helps to fill in sparse areas and define brow shape. It creates a defined yet natural brow look.