*Free Shipping Over $129 - 30 Day Returns on Most Items - Most Items Ship in 1–2 Business Days
Star brite GEL FSR Xtreme Fiberglass Stain Remover - 16 oz
Star brite GEL FSR Xtreme brings professional-grade stain-fighting chemistry to fiberglass, gelcoat, and painted finishes — no sanding, no abrasive pads required. The thick gel formula clings to vertical and curved hull surfaces, activating in minutes to chemically lift rust, tannic acid discoloration, and stubborn waterline stains. Once rinsed clean, the surface is ready for polish, wax, or ceramic coating.
Specifications:
- Size: 16 oz
- Formula type: Thick gel — clings to vertical and curved surfaces
- Targets: Rust stains, tannic stains, and waterline discoloration
- Compatible surfaces: Fiberglass, gelcoat, and painted finishes
- No sanding or abrasive pads required
- Activation time: 2–3 minutes after application
- Application method: Cloth, sponge, or brush
- Reduces manual scrubbing effort by lifting stains chemically
- Leaves surface ready for polish, wax, or ceramic coating
- Suitable for marine and RV use
Directions:
Shake well before use. Apply to the stained surface with a cloth, sponge, or brush and allow to activate for 2–3 minutes. Rinse thoroughly with fresh water. Repeat application for stubborn stains. Use when ambient temperature is above 50°F. Wear rubber gloves during application.


