To clean shower walls streak-free and protect them from limescale, soap scum, and water spots for months, a simple trick from professional cleaning companies works wonders: a combination of vinegar, dish soap, and a water-repellent sealant.

The DIY recipe for the cleaning solution:

200 ml white household vinegar (dissolves limescale and mineral deposits)
200 ml warm water
1–2 tablespoons dish soap (dissolves grease and soap scum)
Step-by-step instructions:

Spray & Let it work: Mix the ingredients in a spray bottle, spray the shower wall generously, and let it work for 10–15 minutes.

Wipe & Rinse: Gently rub with a soft sponge and rinse thoroughly with cold water.

Dry: Dry the glass or plastic surface completely with a microfiber cloth or window vacuum.

The secret to 3x longer protection (beading effect):

To prevent water droplets from adhering and limescale buildup, apply a thin layer of dishwasher rinse aid or a special car windshield sealant spray (rain repellent) to the glass with a dry cloth after drying, then polish it. The water will simply bead off without leaving streaks.

Everyday tip: After each shower, briefly wipe the shower screen dry with a squeegee – this will keep the glass looking like new for weeks.