By Sebastian Madlangbayan, founder of Cleonse: the world's cleanest 3-ingredient organic electrolyte.
Not really. For electrolytes, sea salt and table salt are almost the same — gram for gram they deliver essentially the same sodium, since both are roughly 40% sodium. The real differences are iodine (table salt usually has it, most sea salt doesn't) and additives (table salt often contains anti-caking agents; unrefined sea salt doesn't).
I'm Sebastian Madlangbayan. I played tennis at a state-championship level, and I built Cleonse because I got tired of hydration products that oversold what was actually in the packet. So let me answer this one honestly, without the marketing gloss: if you're reaching for salt to replace what you sweat out, the type of salt matters far less than most brands want you to believe.
Let's walk through why.
The short version: sodium is sodium
Here's the fact that undercuts most of the "our sea salt is special" marketing you've seen: by weight, sea salt and table salt are almost identical in sodium content. Both are roughly 40% sodium. That works out to about 2,300 mg of sodium per teaspoon (around 6 grams) of salt, whether it came from an evaporated seawater flat in France or a refined industrial process.
Your body doesn't read the label. A sodium ion from sea salt and a sodium ion from table salt are the exact same thing. When you sweat during a long match or a hot afternoon, you lose sodium, and you replace it with sodium. The rock it started as makes no difference to that transaction.
So if a company tells you their sea salt hydrates you "better" because it's sea salt, they're leaning on a feeling, not chemistry. For sodium replacement specifically, the source barely matters.
So where do sea salt and table salt actually differ?
They do differ — just not in the way that sells product. The two real differences are iodine and additives, plus a small amount of trace minerals and a difference in processing.
1. Iodine
Table salt is usually iodized, meaning iodine is added to it. This is one of the genuine public-health wins of the last century. Iodine is an essential nutrient, and adding it to common table salt helped wipe out a lot of iodine-deficiency problems in populations that weren't getting enough from food.
Most sea salts, including French grey, do not have added iodine. That's not a knock on sea salt — it just means if table salt was your main iodine source and you switch entirely to sea salt, you'll want to make sure you're getting iodine elsewhere (seafood, dairy, eggs, and iodized salt in cooking are common sources). More on that in the FAQ.
2. Additives
Refined table salt typically contains anti-caking agents — things like sodium aluminosilicate — added to keep it dry and free-flowing so it never clumps in the shaker. They do their job well. But they're additives, and for some people that's the whole reason they went looking for something simpler.
Unrefined sea salts don't need anti-caking agents. They keep a little natural moisture, which is part of why quality sea salt often feels slightly damp and clumps a bit. That texture is a feature, not a flaw — it's salt that hasn't been stripped and re-engineered.
3. Trace minerals
Unrefined sea salts like French grey (also called sel gris) retain small amounts of trace minerals — magnesium, calcium, potassium, and others — that heavy refining removes. The grey color itself comes from the clay and minerals in the salt flats where it's harvested.
Here's where I'll be blunt, because a lot of brands aren't: these trace minerals are real, but they're tiny. They are not a meaningful dose of magnesium or potassium. If you need real magnesium or potassium, sea salt is not how you'll get it. Anyone implying their sea salt is a mineral megadose is overselling. Trace means trace.
4. Processing
Table salt is heavily refined and often mined from underground deposits, then processed down to nearly pure sodium chloride before additives go back in. Unrefined sea salt is made by evaporating seawater and doing very little else. Neither approach is "bad" — they're just different, and that difference is what accounts for iodine, additives, and trace minerals above.
Sea salt vs table salt at a glance
| Feature | Unrefined sea salt (e.g. French grey) | Refined table salt |
|---|---|---|
| Sodium per teaspoon (~6 g) | ~2,300 mg (roughly 40% sodium) | ~2,300 mg (roughly 40% sodium) |
| Iodine | Usually none added | Usually iodized (iodine added) |
| Anti-caking agents | None | Often added (e.g. sodium aluminosilicate) |
| Trace minerals | Small, trace amounts (magnesium, calcium, potassium, others) | Largely removed by refining |
| Processing | Minimal — evaporated seawater | Heavily refined |
Read that top row again. For the one thing you actually care about when you're replacing sweat — sodium — they're a tie.
What this means for hydration
When you're trying to support hydration, sodium is the electrolyte you lose the most of in sweat, and it's the one that helps your body hold onto the water you drink. That's the job. And that job gets done the same whether the sodium came from sea salt or table salt.
So the honest reasons to prefer one over the other aren't about hydration performance. They're about:
- Additives — do you want anti-caking agents in your salt or not?
- Iodine — are you covered elsewhere, or do you rely on iodized salt?
- Taste and cleanliness — some people, myself included, just prefer the rounder taste and simpler ingredient story of unrefined sea salt.
That's it. Those are legitimate reasons. "It hydrates you better" is not one of them.
Why Cleonse uses French grey sea salt (the honest version)
Cleonse has exactly three ingredients: organic lemon or organic strawberry powder, organic cane sugar, and French grey sea salt. That's the whole formula. Each 30g stick delivers 500 mg of sodium, along with 85+ trace minerals from that grey sea salt — in trace amounts, exactly like I described above, not mega-doses.
I chose French grey sea salt for two plain reasons, and neither of them is a hydration miracle claim:
One, it's a clean, additive-free sodium source. No anti-caking agents. When the entire point of the product is a short, honest ingredient list, I wasn't about to bring in a salt carrying additives I'd then have to explain away. Cleonse has no stevia, no artificial sweeteners, no artificial flavors, no dyes, no preservatives, no gums, no fillers, and no anti-caking agents — and the salt choice is part of keeping that promise.
Two, it tastes better to me. French grey sea salt has a rounder, less sharp character that plays nicely with organic cane sugar and real fruit powder. That's a taste decision, made openly.
What French grey sea salt is not, in Cleonse, is a stealth source of meaningful magnesium or potassium. It isn't. And I'll say the other honest part too: Cleonse does not add potassium or magnesium. Some people want those, and if that's a dealbreaker for you, I'd rather you know now than feel misled later. What Cleonse does is deliver clean sodium and real carbohydrate as intentional training fuel — 100 calories, 26g carbohydrate, 24g sugar per stick — mixed into 16 oz (473 ml) of water.
If you want the deeper reasoning behind that whole philosophy, I wrote about what the cleanest electrolyte actually means, and you can always check the full Cleonse facts to see every number for yourself.
The real cost of "trace mineral" marketing
I want to name the pattern, because it's everywhere. A brand puts a pinch of fancy sea salt in a packet and then builds the entire story around "84 trace minerals" or "ancient sea minerals," as if that's what's doing the work. It isn't. The sodium is doing the work. The trace minerals are a rounding error, nutritionally speaking.
I list 85+ trace minerals on Cleonse too — because it's true, and French grey sea salt genuinely contains them. But I'll never tell you they're the reason to buy it, because that would be dishonest, and honesty is the entire strategy here. The trace minerals come along for the ride. The sodium and the real cane sugar are the point.
So which should you use?
For everyday sodium and supporting hydration: use whichever salt you like. They're interchangeable for sodium.
If you want no additives, pick an unrefined sea salt. If you rely on your salt for iodine, keep some iodized salt in the kitchen or make sure you get iodine from food. And if you want a portable, pre-measured version built around clean sodium and real fuel, that's exactly what I made Cleonse to be.
You can grab it as Organic Lemonade, Organic Strawberry, or the Duo Assortment at cleonse.com — 10, 30, or 60 sticks for $33, $66, or $110 one-time, free shipping, with a 30-day guarantee so there's no risk in trying it. If you've read this far and you want a clean sodium source with a three-ingredient label you can actually pronounce, try the Cleonse electrolyte drink mix and see how it sits with you.
Try The World's Cleanest Electrolyte™
Three ingredients. 500mg sodium. Nothing artificial. Free shipping and a 30-day guarantee.
Shop CleonseFrequently Asked Questions
Is sea salt healthier than table salt?
Not in any way that matters for sodium. Gram for gram they deliver essentially the same sodium. Sea salt skips anti-caking agents and keeps a little of the trace minerals refining removes, while table salt usually adds iodine. "Healthier" depends on which of those trade-offs you care about — it's not a hydration difference.
Does sea salt have more electrolytes than table salt?
Effectively no. The main electrolyte in both is sodium, and both are roughly 40% sodium by weight. Sea salt carries small trace amounts of other minerals like magnesium, calcium, and potassium, but those are tiny — not meaningful electrolyte doses. Don't count on sea salt for anything beyond sodium.
If I switch to sea salt, will I miss out on iodine?
You might, if iodized table salt was your main source. Most sea salts, including French grey, don't have added iodine. Iodine is an essential nutrient, so if you cut out iodized salt entirely, make sure you're getting it from foods like seafood, dairy, and eggs, or keep some iodized salt for cooking.
Why does Cleonse use French grey sea salt instead of a mineral blend?
Two honest reasons: it's a clean sodium source with no anti-caking agents, which fits Cleonse's three-ingredient promise, and it has a rounder taste. It is not there to be a mineral megadose. The 85+ trace minerals it contains are in trace amounts only, and Cleonse does not add potassium or magnesium.
How much sodium is in one Cleonse stick?
Each 30g stick has 500 mg of sodium, from French grey sea salt, mixed into 16 oz (473 ml) of water. You also get 100 calories, 26g carbohydrate, and 24g sugar per stick from organic cane sugar — real carbohydrate meant as intentional training fuel, not a sweetener afterthought.
Is sea salt better for hydration during exercise?
Not because it's sea salt. Hydration support during exercise comes mostly from replacing the sodium you sweat out, and sea salt and table salt supply that sodium equally. What can help is having sodium alongside some carbohydrate and enough water, which is how Cleonse is built — but the salt type isn't the magic.
Editor's note
Sources for the salt facts in this article: sodium content of salt (roughly 40% sodium by weight, about 2,300 mg per teaspoon) per U.S. Food and Drug Administration and USDA FoodData Central references on salt and sodium. Iodization of table salt as a public-health measure per the World Health Organization and the American Thyroid Association. Anti-caking additives in refined table salt (e.g. sodium aluminosilicate) and the composition of unrefined sea salts per FDA food-additive references and standard food-science sources. This article is educational and is not medical advice; Cleonse supports hydration and is not intended to diagnose, treat, cure, or prevent any disease.