We report the cases of four patients seen in our department since 1967
with allergic reactions to preservatives in Unna boots. The first thr
ee patients had reactions to parabens and the last had a photoallergic
reaction to hexachlorophene. Preservative-free Unna boots were succes
sfully applied to patients with allergy to parabens. A table of some c
urrently available Unna boots, detailing their ingredients, is also pr
esented.