How does bleach remove a dye stain

Before we start, we assume that the dye stains the surface by forming an adsorptive interaction. The majority of dyes in the kitchen come from vegetables. A particularly intense dye is f-carotene (II), which colours carrots, the golden leaves of autumn and some flowers. The intensity of the f -carotene colour arises from the extended conjugation. 

Secondly, by decreasing the extent of conjugation, the electron density within the adsorbate decreases. Since a large electron density was possibly a major cause of the adsorptive bond being so 

The conjugation strength is also decreased because some of the electron density has been donated to the surface. 

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