This Dylon Fabric Lightener is a great choice for anyone looking to brighten their fabrics. It is suitable for use in both washing machines and pre-dyeing, and comes in a 600g pack. It is easy to use and can be added directly to the washing machine or pre-dyeing bath. It is designed to lighten fabrics without affecting their colour or texture, and can be used on a variety of fabrics including cotton, linen, and polyester. It is also suitable for use on both light and dark fabrics. The lightener is safe to use and is free from chlorine and other harsh chemicals. It is also biodegradable, making it an environmentally friendly choice. To use, simply add the lightener to the washing machine or pre-dyeing bath, and follow the instructions on the packaging. This product is a great choice for anyone looking to brighten their fabrics without damaging them.