oil. The only oil I could readily find at my Mother-In-Law's was olive oil, so I put a small amount onto a couple of pieces of kitchen roll and rubbed the sea glass over the patches of oil. And, once dry.... voila!

Mix equal parts white vinegar and water in a bucket (you can also make it in a spray bottle). Optional: add a few drops of dish soap to help cut through grease and grime. Use a dry microfiber cloth to remove dust or dirt from the window surfaces.

Vinegar, an all-natural and nontoxic cleaner, mixed with warm water is an effective and environmentally friendly glass-cleaning solution. Avoid using soap and paper towels for cleaning glass; instead, opt for a solution with minimal soap and use a microfiber cloth or newspaper to prevent streaks and lint.