How do you clean a synthetic cultural marble sink or tub?

The scratches might actually be cracks. I had a tiny hairline mark on my bathtub that turned into a crack that eventually travelled the circumference of my tub!

Here are a bunch of videos how to restore and fix cultured marble. https://www.youtube.com/results?search_query=how+to+clean+and+get+scratches+out+of+cultured+marble+sink

Have you tried closing the drain and filling the sink with warm water, and pouring a quart of bleach in. Swirl to ensure even distribution of the bleach, then let it stand for an hour. the results may surprise you.

I put a dry paper towel in the sink and spray with hydrogen peroxide and let sit over nite. Works really well.

You can try using bar keeper's friend, it worked in our sink!

I don't know about getting your scratches out but I recommend

using a magic eraser sponge and

cleaning your sink with vinegar.

It has great stain fighting properties.

Good luck!

They're asking about the scratches.....not how to get it clean. I had the same issue, did the bleach thing for it to be clean but never was able to get the scratches out so......I went back to stainless steel...no more problems! I also purchased the stainless sink used from Offer Up. It will do until I decide to remodel the kitchen and then, I'll choose a new sink that is "scratch resistant" if one exists!

If the scratches are not too deep maybe you could sand them out with automotive sand papers. They are really fine grit and some are so fine they almost polish. If you go that route you may want to remove the tailpipe/drain so that you can get them all sanded out. You may be able to bring back some shine by buffing with a buffing attachment on a drill. Most likely it is acrylic so be slow and gentle.

P.S. If you decide to try and bring it back to its original color there is a good bleach recipe for plastic if you go to www.howtogeek.com and do a search.

Not sure about your scratches I would Google it. For your sink I would use dawn soap banking soda and vinager let it set over night then clean with the magic eraser! :)

Thank you for all your ideas. I have tried most of the chemical techniques but it does not get rid of the scratches. I will try automotive ssand paper on a small area. Thanks

Cultured marble is poured on a mold sprayed with acrylic gelcoat. When the part cures the gelcoat adheres to the product. The gelcoat will only hold up to so many hot and cold cyles, then it will begin to crack, it usually happens in the men's sink before the ladies because of his shaving. Unfortunately, there is not much you can do to make it look brand new. Do as some suggested, put a bleach solution in the sink, let it set for maybe an hour, that will kill an mold or mildew in the cracks. You can pick up a fiberglass repair kit, make sure the area is completely dry, lightly sand the area, then paint it with the fiberglass glaze once it drys, sand lightly with 600 grit paper. You may need to buff it lightly with automobile compound. Be careful not to buff to hard or fast because you can burn the fiberglass finish. Hope this helps.

You can sand with a 600 grit paper, do not sand with the paper on your fingers or you will make a ditch where you are sanding. Get something that is small, flat and hard, you could probable use a popsicle stick or part of a stick you use to stir paint. Wrap the paper arond the stick and sand lightly, it will be dull so you may still need to buff. Now for a quick inexpensive fix you could paint the area with clear fingernail polish, that will seal the cracks for a while.

I had one of those and I hated it. I went to Habitat ReStore and got a beautiful porcelain sink for $3.50. Took 15 minutes to install. I'm not sure I have the patience to restore one, sorry. Habitat is so low on their prices, though, sometimes you can find diamonds in with the coal.

Here' a post that might help https://chascrazycreations.com/clean-bathroom-natural-products/