silica gel before and after use. moisture adsorbing

purple blue pink design pattern textile glass art violet circle wall lighting window flooring flower line lilac light absorbent absorbing airtight anti-bacterial anti-fungal blue bubbles camera equipment care chemical chemical reactions clear closeup color crystal damp desiccant details dry function gel gel texture germs granular humidity humidity control industrial macro material moisture moisture packet preservatives preserve prevent prevention room sachet science silica silica pack sand silicate storage temperature transparent use water