| 摘要 |
A particulate laundry detergent composition comprises a major proportion of white or light-coloured particles, and a minor proportion of visually contrasting particles of material capable of imparting a colour to the resulting solution when the composition is dissolved in water. The visually contrasting particles may contain a fluorescent material, yielding a fluorescent wash liquor, or may contain a pH indicator which gives a coloured solution at high pH but a colourless or differently coloured solution at lower pH values. The visually contrasting particles and the visual effects in the wash liquor provide cues to the consumer, for example, to demonstrate the presence of a beneficial ingredient, or to indicate that more product should be added. |
