What it is
Zinc Gluconate is a water-soluble organic zinc salt formed from zinc and gluconic acid. In formulations it provides zinc in a soluble, skin-compatible form and is used as a conditioning and mildly astringent agent. It is commonly chosen for formulas aimed at oily or blemish-prone skin because of zinc's affinity for such conditions.
Safety & warnings
Zinc gluconate is widely used and generally well tolerated on skin at cosmetic levels, and unlike zinc oxide it is a soluble salt rather than a particulate. It is not a recognized fragrance allergen and is not considered comedogenic.
Origin & sourcing
A synthetically prepared salt made by combining zinc with gluconic acid, the latter derived from glucose. The result is a defined, water-soluble compound rather than a botanical extract.
Questions everyone asks
Is zinc gluconate the same as zinc oxide?
No. Zinc gluconate is a water-soluble organic zinc salt used for skin conditioning, while zinc oxide is an insoluble mineral UV filter and pigment.
Why is it used in sunscreens for oily skin?
It supplies soluble zinc and has a mildly astringent, conditioning character that suits oily or blemish-prone skin formulas.