And what's the difference between a powder and liquid detergent? As is often the case, knowing more about the chemistry involved will help you answer those questions. What is a detergent?

We review three different types of laundry detergent – liquids and gels, which are the best for keeping colours bright, washing powder that shines when it comes to getting whiter whites, and laundry ...

Which washing powders, liquid capsules, liquid and gel detergents will get your clothes spotless? We reveal what you need to know about laundry detergents. We've tested laundry detergents from Ariel, ...