What it is
Sodium gluconate is a water-soluble salt derived from glucose that binds metal ions in a formula. By sequestering trace metals it acts as a chelating agent, helping prevent the discoloration, odor, and breakdown that metal ions can trigger and supporting the performance of preservatives. It can also contribute mild humectant and conditioning effects, and it is often chosen as a gentle alternative to stronger chelators.
Safety & warnings
Sodium gluconate is generally well tolerated, has a mild profile, and is used at low levels in cosmetics. It is not a known fragrance allergen and is not considered comedogenic, and it is often selected as a gentler chelating option.
Origin & sourcing
Produced by fermentation of glucose to gluconic acid, which is then neutralized with a sodium source; the sugar feedstock is typically plant-derived.
Questions everyone asks
What does sodium gluconate do in a sunscreen?
It acts as a chelating agent, binding stray metal ions so the formula stays stable in color and scent and its preservative system works effectively.
Is sodium gluconate natural?
It is made by fermenting glucose, usually from a plant source, and then neutralizing the resulting acid, so it is biologically derived through processing.