Final answer:
Glass cleaners for fiberglass fixtures can be non-abrasive and include isopropyl alcohol, alkaline detergents, and mild abrasives.
Step-by-step explanation:
Glass cleaners are usually composed of organic, water-miscible solvents such as isopropyl alcohol and alkaline detergents. Some glass cleaners may also include a mild abrasive. These cleaners are typically available as sprays or liquids and can be applied directly to fiberglass fixtures or used with a soft cloth. Examples of non-abrasive soft scrubbed cleaning compounds include glass cleaners containing isopropyl alcohol, alkaline detergents, and mild abrasives.