Kathryn’s question…Does adding these [bath bomb] salts or Epsom salts change the flotation properties of the water, a la the Dead Sea?
The Right Brain responds:
Kathryn’s question came as a comment in response to our post on the Top 5 Best Bath Bombs. Normally we leave these kinds of questions to the Left Brain, but this time I couldn’t resist. Let’s see what it would take to make you float in your bath tub like you would in ocean water. If we do the math here’s what you get:
Bath bomb math
The average bathtub is somewhere around 50 gallons of water which is roughly 190 liters. The salt content (aka “salinity”) of the ocean is about 35 grams of salt per liter of water. So, if you filled your tub with ocean water you’d have almost 7 kilograms (or 15 pounds) of salt. The average bath bomb weighs about 6 ounces (170 grams) and if we assume that we could make a bath bomb that contained roughly 75% salt (you still have to have the ingredients that make it fizzy, or it wouldn’t be a bath bomb!), that would give us 127 grams of salt per bomb. That means you’d need about 55 bath bombs in your tub to make you as “floaty” as you would be in the ocean.
Do us a favor, if you decide to try this experiment buy your bath bombs from the Amazon.com link above so we can make a few bucks. It isn’t cheap running this blog – you wouldn’t believe what we spend each week just on wine for Sarah Bellum!
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My Favorite is a LUSH holiday one called Jingle Spells, look for it again next year around halloween or im sure they are on amazon or something.
I plan on going to a Lush location next month when I am near it; gifts for my daughter top the list, but she doesn’t use bath bombs. I’d be happy to add to my upcoming Amazon order…are the bombs the only Amazon product y’all benefit from? (And I’m not too sure how they would come across as a random gift for others…”Thinking of You, please bathe more often!”)
ah shame – i guess a 7kg bath bomb is simply impractical!
I had to go check this — a cubic foot of ocean water is apparently 2.2 POUNDS of salt. Christ on a crutch!
Wow.
So what’s the point of soaking a sore foot, etc., in epsom salts? I thought there was some reason….
Verrrrry funny Righty! Maybe you should tell our readers how much of the Beauty Brains budget goes toward the “Right Brain Eye Brow Tweezers Fund.”