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warnings
V. WARNINGS A. Contains sodium bisulfite, a sulfite that may cause allergic-type reactions (e.g. hives, itching, wheezing, anaphylaxis, severe asthma attack) in certain susceptible persons. The overall prevalence of sulfite sensitivity in the general population is unknown and probably low. Sulfite sensitivity is seen more frequently in asthmatic than in nonasthmatic people. B. May produce exogenous ochronosis, a gradual blue-black darkening of the skin, the occurrence of which should prompt discontinuation of treatment. . C. There are no sunscreen agents in Glytone Skin Lightening Gel. Since minimal sunlight exposure may reverse the lightening effect of this preparation, an effective broad spectrum sunscreen should be used during the day, and unnecessary sun exposure avoided, or sun-protective clothing should be worn to cover treated areas in order to prevent repigmentation from occurring. For daytime lightening of unwanted hyperpigmented areas, Glytone SunVanish Skin Lightening Cream Broad Spectrum SPF 25 should be considered.
VII. ADVERSE REACTIONS No systemic adverse reactions to hydroquinone have been reported. Occasional hypersensitivity (localized contact dermatitis) may occur in which case the medication should be discontinued and the physician notified immediately. Sensitivity to sodium bisulfite is a potential. See WARNINGS .