This product with active oxygen is the perfect additive for whitening your garments and for removing the most stubborn stains (you can use it on both white and colored garments, in fact it is colourfast!). Not only that, thanks to active oxygen and other natural ingredients, this product deeply sanitizes the fabrics, cleansing them thoroughly. This bleach is tested for heavy metals: nickel, chromium and cobalt (<0.4ppm). Like all Greenatural products, a company that has patented an eco-sustainable distribution system, this eco-bleaching complies with the EcoDetergence standard of the Institute for Ethical and Environmental Certification (ICEA). Instructions for use: Washing machine: pour 100 ml of Bleach into the drum of the washing machine and start the washing programme. To be used in combination with a laundry detergent. By hand: pour 100 ml of Bleach into 10 liters of cold or lukewarm water together with the laundry detergent. Leave to soak for at least 1 hour, then rinse with cold water.