In a direct comparison of two popular limescale removers, the Flash Deep Clean and Hygiene Anti-Bac Bathroom Cleaner proved more effective than Viakal Classic Limescale Remover Spray, removing significantly more limescale in a single application and costing less.
Test Setup
Mia O'Hare, a journalist, tested both products on limescale build-up on her bathroom taps. Viakal, marketed as the "number one against limescale," was purchased from Asda for £2.65. Flash, which promises to "remove up to 100% of bathroom grease and limescale," cost £2.44 from the same store. Both products came in similar spray bottles.
To ensure a fair comparison, O'Hare followed each product's instructions precisely. Viakal required spraying the surface and leaving it for three minutes, the maximum recommended duration. Flash instructed a five-minute wait time before wiping and rinsing.
Viakal Results
After applying Viakal and waiting three minutes, O'Hare rinsed the tap and scrubbed with a damp sponge. She was surprised to find substantial chunks of limescale still clinging to the tap. While some limescale was removed, certain areas proved too resistant, requiring a second application—which she did not perform to keep the comparison fair.
Flash Results
Flash's spray did not coat the tap as thoroughly as Viakal, but after five minutes, O'Hare wiped and rinsed the area. She was pleasantly surprised to find that the majority of the limescale had lifted. After a thorough scrub with a sponge, the tap looked considerably cleaner.
Verdict
Both products were straightforward and simple to use, delivering results within minutes. However, Flash came out on top, removing considerably more limescale than Viakal without needing a second application. Flash also works out to be marginally cheaper at £2.44 versus £2.65.
Additionally, Flash's product tackles not only limescale but also soap scum and kills 99.9% of bacteria. Given its superior performance and lower cost, O'Hare concluded that Flash is the clear winner.



