Ancient Egyptian makeup For makeup too, the Egyptians had to turn to the natural ingredients that were available at the time. They used henna to colour their hair and to tint their nails, saffron was used as an eyeshadow, burnt almonds were used to darken their eyebrows and they used red ochre for their lips.
A lighting ballast is a piece of equipment required to control the starting and operating voltages of electrical gas discharge lights. Examples of gas discharge light sources include fluorescent and neon lights and high-intensity discharge (HID) lamps.
Ballast Factor (BF) is a measurement that compares the ratio of light output of a lamp or lamps operated by a specific ballast to the light output of the same lamp or lamps operated by a standard reference ballast. The higher the BF is, the higher the wattage running through the ballast.