The Index · Zinc salt of gluconic acid
Zinc Gluconate
Zinc Gluconate
Bioavailable zinc salt used in soothing/repair and anti-blemish formulas; evidence moderate for zinc class effects.
LimitedZinc class pharmacology supportive; salt-specific topical RCTs limited.
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Zinc gluconate supplies Zn²⁺ with a gluconate counter-ion. In leave-ons it appears in repair balms and blemish cares for soothing and antimicrobial-adjacent claims[1].
What it does
Zinc supports epidermal enzyme function and has documented roles in inflammatory skin care; gluconate is a common cosmetic salt form alongside zinc PCA and zinc oxide (mineral filter/protectant)[1].
The evidence
Stronger for zinc as a class than for gluconate specifically in topical RCTs[1].
How to use it
Typically a supporting mineral salt beside panthenol or madecassoside, not a primary acne drug.
Evidence by claim
Graded separately; the entry grade is the best-supported claim
Topical zinc salts support soothing/anti-inflammatory skin care[1]
ModerateClass-level evidence.
Safety & limits
Source and region, always
leave-on — Common mineral salt at low use levels; generally well tolerated. CA US EU UK
Sources · 1
Numbered as cited in the text
- [1]Gupta M, Mahajan VK, Mehta KS, Chauhan PS. Zinc therapy in dermatology: a review. Dermatology Research and Practice (2014)doi:10.1155/2014/709152
Revision history
18 Sept 2026Drafted by botTheSkindex Desk