Glutaraldehyde is a tanning agent with strong bactericidal and fungicidal properties. Topical application of a 10% solution was used with good effect against hyperhidrosis of the feet. No cross reaction was found in patients sensitized to formaldehyde.
Juhlin L, Hansson H. Topical Glutaraldehyde for Plantar Hyperhidrosis. Arch Dermatol. 1968;97(3):327-330. doi:10.1001/archderm.1968.01610090099017