Powdered, containing blue particles, slightly alkaline, non-foaming washing additive. The washing efficiency increasing additive has whitening, stain removing and color-lasting effect when it is used. with washing powder/detergent. It is quick, effective and easy to use. Increases the cleaning effect of washing powder/detergent when it is used for cleaning white and colourfast textiles. It is suitable for washing all types of textiles except wool and silk. The usage in soaking water is suitable for improving the washing efficiency.