basic dyes are more effective for bacterial staining than acidic dyes because basic dyes have a positive charged chromogen. Bacterial nucleic acids and certain cell wall compo â¦ nents carry a negative charge that strongly binds to the cationic chromogen.
Zinc oxide can be used in ointments, creams, and lotions to protect against sunburn and other damage to the skin caused by ultraviolet light (see sunscreen). It is the broadest spectrum UVA and UVB reflector that is approved for use as a sunscreen by the FDA, and is completely photostable.he zinc oxide is thought to have been produced by heating zinc ore in a shaft furnace. This liberated metallic zinc as a vapor, which then ascended the flue and condensed as the oxide. This process was described by Dioscorides in the 1st century AD.
All products should be kept away from children and pets. PRESCRIBED FOR: Topical zinc oxide products are used to treat and prevent minor skin irritations associated with diaper rash, burns, cuts, scrapers, allergic reactions, and insect bites. Topical zinc oxide is available without a prescription. DOSING: Topical zinc oxide products may be applied to affected areas several times daily as necessary. Do not apply to large areas or on blistered or broken skin. Avoid contact with eyes and mucous membranes.