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Question DetailsAsked on 1/7/2017

Can I use Epsom salt in an acrylic tub?

I have an acrylic tub done by company Bath fitters and want to use Epsom salts in the bathtub. Can this damage the tub?

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1 Answer


I see no reason wny not from a chemical standpoint - but why not eMail the manufacturer and ask at, because some manufacturers do warn against epsom salts - though from what I have read that is for whirlpools and jetted tubs and such where the salts can damage the metal parts.

Because the material is "soft" and abrasion prone, I would melt the epsom salts in a container of hot water first, then pour carefully into the tub being sure to not drain the bottom sediment from the container into the tub - because most epsom salts leave undissolved crystals and have trace abrasive contaminants left behind when they are dissolved which may well scratch your liner.

Also - be sure to wash the tub out right after use, because when they dry the epsom salts will form a black or pinkish scale or "hard water" residue on the surface, especially in the bottom. You would have to check with manufacturer on their recommendation, but white kitchen vinegar would normally be the thing to remove epsom salts which have dried and deposited on the surface.

Answered 3 years ago by LCD

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