Topical formulations of diphenhydramine are available, including creams, lotions, gels, and sprays. Temporary hair color is available in various forms including rinses, shampoos, gels, sprays, and foams. Both are used as propellants in aerosol sprays. Instant action systems are mainly aerosol sprays, or atomizers. Nitroglycerin is available in sublingual tablets, sprays, ointments, and patches. True aerosol sprays release their propellant during use. Most glass cleaners are available as sprays or liquid. PTFE is used in some aerosol lubricant sprays, including in micronized and polarized form. Decongestants can be administered in different ways such as tablets and nasal sprays. Predisposing factors include use of corticosteroid sprays or inhalers or immunosuppression. Transdermal estradiol is available in the forms of patches, gels, emulsions, and sprays. All commercial citrus growers are advised in applying two dormancy pesticide sprays. Some plant species are particularly sensitive to soap sprays. Zinc sulfate is used to supply zinc in animal feeds, fertilizers, toothpaste, and agricultural sprays. Budesonide in the form of nasal sprays is a treatment for allergic rhinitis.