Uneven shower-head spray? Clean the nozzles gently and descale safely
Limescale on shower nozzles can distort the spray pattern. Check whether the model has rub-clean nozzles and use only manufacturer-approved descalers.
hansgrohe describes rubbing its flexible QuickClean silicone nozzles to remove deposits. For heavier limescale it recommends compatible mild citric-acid cleaners while warning against strong acids, chlorine bleach, vinegar and mixing cleaners. Check your own model first.