We first tested washing-up liquids in 1959. Our rigorous assessments separate the best washing-up liquids from those you should leave on the shelf. For more ways to keep your household running smoothly, sign up for our Home newsletter – it's free monthly

The higher the score, the better the washing-up liquid performed in our tests. Certain parts of the test are more important than others, and so carry different weightings. We think a washing-up liquid’s most important job is to bust fat from plates, so a large proportion of our total test score is based on this. Top 10 Chocolates Top 15 Chewing Gums Kinder’s Product Range Nutella’s Product Range Ferrero’s Product Range Kit Kat Range Cadbury RangeA washing-up liquid needs to earn 79% in our rigorous tests to become a Best Buy. Those with less than 45% become a Don't Buy.