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.
However, when carefully formulated with other ingredients for healthy skin, zinc oxide can soothe skin and protect it from irritants. Zinc Oxide in Skin Care. One of the more popular uses for zinc oxide is to reduce occurrences of diaper rash by forming a protective barrier on the infantâs delicate skin.This mitigates the effects on the skin of bacteria and other irritants that can be present in urine or other excrement.efore you use products with zinc oxide, itâs a good idea to visit your dermatologist, or at least stop by the skin care counter at your local department store. What is Zinc Oxide. Zinc oxide derives its name from zincite the mineral from which it is produced when it is combined with oxygen molecules.