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Ask The Chemist

When it comes to keeping your boat clean, it seems like everything in the sea seems a threat. Fortunately, these threats can be met with a little know-how, a little effort and the best boat cleaning products available. 

If you have any additional questions, please contact our chemist through


What makes Sleek environmentally safe? 

Sleek have developed a new alternative ingredient to harsh acid that is derived from 100% renewable vegetable extracts. This ingredient is used in all of our products is a truly 100% natural cleaning blend and very rapidly biodegradable.

Sleek is Ph balanced - does this mean it won't work effectively? 

No, our new 'special' environmentally safe ingredient significantly helps to boost cleaning performance at neutral pH meaning no harsh acids need to be used to achieve high-quality boat detailing. Our 'special' ingredient contains aloe vera extract, rosemary extract and lavender extract whilst also leaving a UV protectant over your boat.

Is there any acid in the products at all?

Yes, we have chosen to use Citric Acid as it is found in nature in fruit and used to balance the pH of the product to pH neutral so that the environment and aquatic life are not exposed to harsh pH levels.

Why should you choose cleaners free from phosphates? 

When too much phosphate ends up in aquatic environments, it spurs the growth of algae blooms that rob oxygen from fish and plants, killing off life.

Will the products provide UV protection for my boat?

Yes, all of our products have added UV protection to stop your boat fading.

Why shouldn't I use soap on my boat? 

Household soap is harmful and toxic to fish and other aquatic life. Seemingly 'safe' soaps are surprisingly toxic to fish with long-lasting effects.

Why is soap harmful to aquatic life? 

Although most soaps are biodegradable, the process can take up to a month in most aquatic environments. Soaps can harm fish at concentrations down to .0042 g/Litre of water. That means a teaspoon of soap can make up to 3000 litres of water deadly to fish.

Does household soap perform as-well as a specifically formulated marine cleaner?

Put simply- no. This is because it is designed to cut grease and tough stains, these soaps are extremely caustic and will quickly strip your wax. Without wax, your boat will oxidise from the suns UV rays and the household soap will begin eating into your gelcoat. It’s better to use a dedicated boat soap like our Sleek Pro, which not only protects our waters, but also sets the standard in performance and outperforms traditional cleaning alternatives. 

What harmful chemicals do traditional boat waxes, polishes and sealants use?

Many other boat maintenance brands on the market use Perfluorooctanoic Acid (PFOA) in the production of Polytetrafluoroethylene (PTFE). This is a synthetic chemical compound that is used extensively in the marine industry for polishes, sealants and protective coatings. It belongs to a group of chemicals known as Perfluorochemicals (PFCs).

Why does Sleek not use Polytetrafluoroethylene (PTFE) in their Boat Finishing Spray Wax?

Polytetrafluoroethylene (PTFE) belongs to a group of chemicals known as Perfluorochemicals (PFCs). As a whole, these synthetic chemical compounds don’t break down and biodegrade and as such, increasing amounts of them are building up in our ecosystem, causing bioaccumulation in food chains and ourselves. Even if all production of PFCs were to cease tomorrow; in a hundred years, two hundred or even five hundred years from now, the same amount of these toxic chemicals would be present in the environment.

What does Sleek use as an alternative to Polytetrafluoroethylene (PTFE) in their Boat Finishing Spray Wax?

We harness the power of a sustainable and natural ingredient found in Brazil from the leaves of a native plant, which makes our wax readily biodegradable. It also produces a mar-resistant and hydrophobic coating that minimises scratches and repels water.