I've tried the rain-x for windshield washer mas effective parin yung original, pero siguro best if you try both.
Another drawback of the washer additive is that it leaves a stain on the hood when you operate the washer lalo na pag paubos na
i've been using the windshield washer additive of rain x for quite sometime and for me, it's quite good for its purpose. nakakatulong mag-repel nang water/rain(although not as effective as the apply n buff type), magaling mag-tanggal nang dead insects/poop/dirt/etc. plus nakatulong din mag-reduce nung pag-skip nang wipers ko dati nang di ko pa naa-ayos. gamit ko din yun as pang-tanggal nang bird poop sa ibang part nang kotse.
re: stain
it does leave a mark pag natuyo but i wouldn't consider it as a stain since madali lang matanggal.
Just bought rain x solution last night sa Handyman, Robinsons Metroeast. P169.75 200 ml na yun. apply ko tonight.
Question: Since it is advisable to leave it overnight, what if di ko remove yung haze for 2 -3 days. di ko naman kasi gingagamit yung car every day. much better ba ang kapit niya sa windshield?
Rain X is good for short term use. It is not durable and will not last long but it will do what it intends to do. If there is Stoner Invisible Glass with Rain Repellent, Aquapel Glass Treatment or Green Earth Hydrophobic Rain Repellent, buy those instead of Rain X. They are guaranteed to stay on months of use and abuse.