- Clipping hairs with a small pair of facial scissors is an option for women with few unwanted hairs. - Chemical depilatories (hair removal creams) are another option for hair removal. However, their major drawback is that many individuals find them too irritating to the skin. Bleaching creams may be used to camouflage hair instead of actually removing the hair.
Black oxide is a conversion coating formed by a chemical reaction produced when parts are immersed in the alkaline aqueous salt solution operated at approximately 285 degrees F. The reaction between the iron of the ferrous alloy and the hot oxide bath produces a magnitite (Fe3 O4) on the actual surface of the part.
Additional treatments like oil or wax are needed for corrosion resistance. But even with oil or wax, black oxide only offers moderate protection and as such is ideally suited for indoor applications. No white rust. An important property of black oxide, unlike some electroplated finishes, is that white rust does not form over time on the finish. Since the formation of white rust is a risk factor for electrical shorts, black oxide fasteners are often preferred in the electronics industry. Elliminates the risk of hydrogen embrittlement