- Known hypersensitivity to any other ingredient, especially to sorbic acid/sorbate, to citronella oil containing e.g. the fragrance compounds geraniol, citronellol and citronellal, or to relevant flowers containing these compounds such as geranium, lavender, jasmine or rose. For patients with known hypersensitivity to perfumes or known type IV hypersensitivity to fragrance-mix I, the application of the investigational product should be performed only with particular caution.