Starbrite Instant Hull Cleaner – Professional Hull Stain Remover

Bring your boat back to its original shine with Starbrite Instant Hull Cleaner, a professional-grade marine cleaner trusted by boat owners worldwide. Specially developed to remove the toughest waterline stains and hull discoloration, this powerful cleaner works instantly to dissolve yellowing, rust stains, algae residue, leaf stains and fish blood without excessive scrubbing.

Unlike many aggressive acid cleaners, Starbrite’s oxalic acid-based formula delivers exceptional cleaning performance while being suitable for use on fiberglass (GRP), gelcoat, painted and plastic hulls. It is the ideal first step before polishing or waxing, ensuring a perfectly clean surface for maximum shine and long-lasting protection.

Available in both 1 Litre and the economical 3.78L (1 Gallon) size, Starbrite Instant Hull Cleaner is suitable for everything from routine boat maintenance to professional marine detailing, marinas and boatyards.

Why Choose Starbrite Instant Hull Cleaner?

• Removes stubborn yellow waterline stains in minutes
• Eliminates rust stains, scum lines and mineral deposits
• Removes fish blood, leaf stains and other organic marks
• Fast-acting formula with minimal scrubbing required
• Safe for fiberglass, gelcoat, painted and plastic hulls
• Oxalic acid-based cleaner for professional results
• Ideal preparation before polishing and waxing
• Suitable for recreational boat owners and professional marine maintenance
• Available in 1L and 3.78L (1 Gallon) sizes

Ideal For

• Fiberglass (GRP) boats
• Gelcoat hulls
• Painted hulls
• Plastic boat surfaces
• Sailing yachts
• Motorboats
• RIBs
• Boatyards and marinas
• Professional boat detailing
• Seasonal hull maintenance

Instructions for Use

1. Shake well before use.
2. Wear protective rubber gloves.
3. Apply using a sponge, brush or spray bottle.
4. Allow the product to work for approximately 2 minutes.
5. Rinse thoroughly with fresh water.
6. Repeat if necessary on heavily stained areas.
7. For maximum gloss and long-lasting protection, finish with a quality marine polish or wax.

Best used at temperatures above 10°C.

Available Sizes

Technical Specifications

• Brand: Starbrite
• Product: Instant Hull Cleaner
• Available Sizes: 1L & 3.78L (1 Gallon)
• Formula: Oxalic acid-based
• Suitable Surfaces: Fiberglass (GRP), gelcoat, painted and plastic hulls
• Removes: Waterline stains, yellowing, rust stains, scum lines, leaf stains, fish blood and organic deposits
• Application: Sponge, brush or spray
• Recommended Temperature: Above 10°C

Why Buy from Cavo Yachting?

At Cavo Yachting, we carefully select premium marine maintenance products that deliver professional results while helping you protect your investment. Starbrite Instant Hull Cleaner is one of the most effective solutions for restoring your boat’s appearance quickly and efficiently, making hull cleaning easier and preparing the surface for polishing and long-lasting protection.