28 Jul 2023 --- Unilever brands Dirt Is Good (known as Persil in the UK) and Robijn are bringing laundry sheets to the mass market. The company describes the laundry sheets as an “ultra-convenient, sustainable format.” Dirt Is Good and Robijn use slow-release fragrance technology, so the products retain a more intense aroma within the fabric long after washing the clothes. Unilever developed the product in response to criticisms that its laundry sheets do not match the long-lasting scent of liquids or capsules.