Hydrogen peroxide is a chemical commonly used in photographic processing, particularly in hypo clearing agents and certain bleaching solutions. It helps remove residual fixer from photographic prints and negatives, ensuring that images remain stable and do not deteriorate over time.
In addition to its role in traditional darkroom work, hydrogen peroxide must be handled carefully, as it is a strong oxidiser. Understanding its function and proper usage allows photographers to maintain archival-quality prints and negatives while safely managing chemicals in the darkroom environment.