Prestone Eco Refill Summer Screen Wash Super Concentrated Makes 5 Litre of Windscreen Wash Fluid 500ml - £3.50 @ Amazon

Price-matching Tesco (see below).

Also on a Save 5% on any 4 offer.Official webpage (interestingly, they say "we've teamed up with Tesco..") holtsauto.com/pre…sh/
Item model number ‎PSCW0040A

• Introducing Prestone Eco Refill Summer Screen Wash, a super-concentrated screen wash that’s tough enough to tackle anything summer driving conditions throw your way
• Small But Mighty: All the cleaning agents present in our ready-to-use screen wash are squeezed into Eco Refill’s compact bottle, so it’s strong enough to take on the dirt and road film while using over 75% less plastic than a standard 5 Litre bottle. That, coupled with a guaranteed streak-free finish, should make it your go-to screen wash for summer driving.
• High-performance cleaning: Eco Refill doesn’t compromise on cleaning performance. This is the same Prestone screen wash you’re used to, but now in a super-concentrated formula. Tough on dirt, streaks and grime, it’ll make light work of whatever the British weather sends your way.
• How it Works: Developed by our specialist team of in-house chemists, Prestone Eco Refill Screenwash is designed to fulfil two purposes: provide high-performance cleaning and help you to reduce your plastic waste. And thanks to our super-concentrated formula, it achieves both, bringing you fantastic results in a small, environmentally conscious package.
• We’ve dialled up the concentration level of our Eco Refill Screen Wash, with a 500ml bottle capable of making up to 5 litres of screen wash. That means you can keep and use the same 5l bottle, topping it up with Eco Refill and water as and when you need to replenish your screen wash.

Price-matching Tesco - from Trolley dot co dot uk: trolley.co.uk/pro…p=1Keepa says (Amazon prices only), keepa.com/Official Prestone video: