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OK. I think this might be more of a soap scum issue. But i could be wrong. I just tried scraping the title. And this is what i am seeing... Considering this development, how do i tackle this?

hydrochloric/muriatic acid & phosphoric acid not working! So i got both hydrochloric/muriatic acid and phosphoric acid! First i tried with the phosphoric acid. 1 part to 10 parts water. Sprayed on. Let sit for 10 mins. Scrubbed with sponge and dish soap. Rinsed with hot water. Nothing...

ozzie908, Looking at the datasheet, The only ingredient in it is phosphoric acid. What kind of stains and surfaces have you used it on? Did it work equally as well on all surfaces and stains? https://www.gompels.co.uk/gompels-multi-purpose-descaler-2x5l.html

Thanks for your input sfh074! I'm not in the US so ordering will not be economical. Making it myself is what im looking to do, by visiting the chemical store and getting the phosphoric acid. Is it safe on the bathroom fixtures? What are they made of anyway...brass?

Alright. I'll get some phosphoric acid from the chemical store. I see 85 online, is that what i should get? I've just used oxalic acid on a tile...if anything, it made it worst. This is what i've tried so far on the tile... 1) Citric acid left on for 10 mins, then rinse off with hot water...

I got 2 years worth of heavy soap scum and hard water stains to remove from a public restroom. These sissy vinegar and bio homemade solutions aren't working. I need a chemical solution that would melt this sh*t off on contact. I don't care if i'll have to wear a hazmat suit for it...i'll get all...

Alright...new stains. I thought avobenzone was the culprit. I bought sunscreen without avobenzone, yet i still got stains, nice and clear too. Now what? Since many said I'd set the stain by bleaching...well now I got fresh stains that haven't been touched. And the strange part is that the...

Launderess... Again, a whole bunch of stuff that lead nowhere. "In this case the substance in question needs an acid to remove; then you have the base (oils, fats or whatever else that went into said sunscreen) which will need surfactants and or base pH to shift." How do we know what the...

@ Launderess... Thank you for your input, although you did sorta say a whole bunch of stuff but offered no real solution. Your post started off promising...and then just lead to a dead end. "But issues lie in not knowing what you are doing exactly, then throwing various things at a wall to see...

Thanks for all your input guys. I've spent more money on stuff to get the stains out than what the clothes cost. Now, it's not even about the money anymore. I've invested so much on this, I just can't give up. I noticed something interesting. I've been soaking the stained clothes in a bucket of...

@ foraloysius... Actually, all I learned is not to use bleach with water that contains iron and not to use it to remove sunscreen stains. As for other stains, it's been effectively removing them (or turning them clear...which is as good as removing them as far as I am concerned) for me since 1976.

Since I can't get Rit here, I'm wondering if I could get the active ingredient from the chemical store. i read its sodium hydrosulfite. Thoughts? @ foraloysius and iheartmaytag. I soaked them in soft water this time. Didn't know they would turn pink until they did. I know not to use bleach and...

Ahh! RIT Color Remover. My Google searches keep pointing me to it but im abroad and unfortunately its not sold here. Cant find it anywhere. Theres gotta be an alternative.

I have a few white shirts that got sunscreen stained. Initially the stains were yellow, but after soaking them in chlorine bleach, the stains turned pink. I've tried everything i can think of...Oxiclean (which later i found out works just like chlorine bleach for this specific problem), washing...

Can't say i've met anyone who would have Louisiana come to their mind when they see LA :)

pumper... Any chance you know what the active ingredient is?

polkanut. Yeah...i dont think Walmart delivers internationally. :(

Moved to a new place with hard water. Unknowingly, i soaked my whites in bleach and hard water and everything is now off white (yellow almost). I'm learning its because the bleach rusted the iron in the water which then transfered to my clothes. Well, at least thats my hypothesis. I do know they...

Too little detergent combo52 says too little detergent will cause the spider arm to fail.... How, exactly? I understand from here that soap left to sit on the spider arm is not good. So logically, the less soap there is, the better...no? How is more soap better?

:( Look at all the hiding places! You guys still think i don't need to treat it?