Waterproof.
**In a consumer test Benefits:Unbelieva-Brow longwear brow gel to fill and thicken brows that lastLongwear brow gel to fill and thicken brows that last, experience brows for days, enhanced up to 48 hoursWaterproof, no smudge, no transfer, sweat resistantAchieves a natural brow look that helps outline and define brow shape Size:0. Unbelieva-Brow Longwear Brow Gel - Blonde Build and sculpt your dream brow from natural to intense. Unbelieva-brow, L'Oreal Paris' first longwear brow gel, fills and thickens for brows that last.