Since the quality seal guidelines are strictly checked and a manufacturer's promise is often just marketing, quality seals have great relevance for me personally. They're also often easy to identify, making it quicker to find the right product on the shelf. I don't want any annoying rashes or allergic reactions in general. Unfortunately, I've already experienced how manufacturers' promises of being 'allergy-friendly' aren't fully kept. I mainly pay attention to the quality seal when buying washing-up liquid and laundry detergent, cosmetics, textiles and food.