Most people think that white clothes can be bleached. But this is not the case. The material of many clothes is not suitable for bleaching, so look at the washing label before bleaching clothes. If a hollow triangle appears, it means that bleach can be used normally. If a triangle with lines appears, it means that this dress can be bleached, but chlorine-free bleach must be used. If there is a solid triangle with a forbidden symbol, try to avoid bleach contact with clothes.

Bleach is a kind of chemical substance, which reacts colored molecules into colorless molecules through redox reaction, so as to remove or dilute the color and achieve the effect of bleaching articles. Bleaching agents can be distinguished according to their role in redox reaction in bleaching process. If the bleaching agent acts as an oxidant in the reaction, it is an oxidizing bleaching agent; If bleaches act as reducing agents in the reaction, they are reducing bleaches. Oxidative bleach, including chlorine bleach and oxygen bleach, is commonly used in daily life.