Sea Salt: What Does Salt Do in Skincare?
Arin Editorial · how this is made
When you see 'Sea Salt' on a label, your first thought might be the kitchen. But this salt also works as an abrasive, humectant, and skin-conditioning agent in cosmetics. What does the data actually say?
What is sea salt?
Its chemical name is sodium chloride (NaCl). Seawater is about 3% salt; sea salt is made by evaporating seawater. Alongside sodium chloride, it contains small amounts of calcium, potassium, magnesium chlorides and sulfates, plus trace minerals. Sea salt production goes back to prehistoric times.
What does it do in cosmetics?
It has four recorded functions: abrasive (for scrubs or dental cleaning), humectant, skin-conditioning agent, and a functional ingredient in fragrances. So the same substance can work as an exfoliant in one product and a moisturizer in another.
What do the records say?
Toxicology compilation data shows conflicting results in genetic damage tests: some tests saw an effect, some did not. This record cannot be judged on its own without knowing dose, species, and exposure route. For eye irritation, sea salt is classified as an irritant; direct contact with the eye may cause irritation.
In the European Union, cosmetic ingredients are subject to regulation; sea salt is used with its listed functions within that framework.
If you see 'Sea Salt' on a label, there is no need to avoid it. If the product is a scrub, apply it gently in small circular motions without pressing hard. If it gets in the eyes, rinse thoroughly with water; avoid abrasive products around the eye area.
Sources
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EPA ToxValDB