Q4 EVER Auto Care Glass Polish Hard Water Spot Remover (100 Grams Cream)

This is a good Product when used in the right way. If you use the paste with a micro fibre cloth it doesn't work and no impact on the stubborn hard water marks. I had tried several methods like Iso propyl alcohol, baking soda/vinegar with lemon and nothing worked. Finally the trick is to use the scotch brite or Gala kitchen utensil scrubber that has silvery elements on them, put the paste on the glass and dampen the scrubber and gently rub the paste onto the glass by occasional dipping into a mug of water, this did the trick for me and finally rinse the glass with 4-5 mugs of water and wipe with a micro fibre cloth

A good product that does what it claims to do. Worked really well to remove the dried mineral deposit on my car windscreen.

Worst product!I used this product in my new car glass and got many scratches even though I used best microfibre cloth. Don't buy this product as it will spoil car glasses

Bought this to clear hard spot on my Car windshield and end up getting scratches and blurred the vision on night and rainy days. I was about to throw this away but before that used this to clean my bulelt Engine cover and voila it clean as new. Atleast it served anotehr purpose hence the 3 star

I say it's works like magic but you have to be quick I want bulk of this q4 contact me it could be cheap but ohk ohk

Had water spot on entire glass of my car. This product removed it fully. I used it directly on the glass and used hands to rub, then used a cloth to wipe it off. Very good product.

My car windows have many water spots. The washing boy used to splash hard water from borewell and allowed it to dry on glass resulting in these spots. This product does work. But the liquid is thick, does not flow easily, dries out on the micro fiber cloth quickly. And you have to really work hard for a long time to clear a tiny area. But it does clear the water spots. Not sure whether one can use electric tools (angle grinders with felt pads) for faster results. Also have not tried felt pads instead of micro fiber cloths for larger contact area. Don't use scotch Brite utensil cleaning pads. It clears the water spots with less effort but leaves scratches. Have not used cerium powder too though intend to try later.

Good product and working as described but for a small scale need to spend more time