Vol. 7, Issue 1, Part B (2025)

Rose petal-based herbal pH indicators provide an ecofriendly and sustainable alternative to synthetic chemical-based pH indicators. Rich in compounds like anthocyanins, the indicator made up of rose petals exhibits distinct COLOUR changes across the pH scale making it great for application in education pharmaceuticals cosmetics, and food quality control. This review explores their formulation focusing on efficient extraction methods stabilization techniques and tricks for maintaining consistency through standardisation. Preservation techniques such as natural preservative encapsulation extend the shelf life ensuring practical usability. Future prospective include the development of the portable formats such as indicator strips and sprays, expanding research to the other parts of nature. Despite the challenges like scalability and batch consistency, rose petal-based indicator holds the immense potential to revolutionise pH testing while keeping the environmental sustainability and reducing reliability on the synthetic chemicals. This innovation bridges the gap between the science and sustainability, and advancing green chemistry principles.