Always clean skin meticulously, an acne skin is very sensitive. Eat a well balanced diet, avoid fatty food and take plenty of exercise, especially in the out-of-doors. Certain pure essential oil can be applied neat to individual marks-such as: 1  Tea tree oil. 2  Lavender oil.
The small golden disk close to the 5 cm marker is a piece of pure gold weighing one troy grain. Shown for comparison are a tape measure and coins of major world currencies. A grain is a unit of measurement of mass, and for the troy grain equal to exactly 7001647989100000000â 64.79891 milligrams. It is nominally based upon the mass of a single seed of a cereal.
The grain was the legal foundation of traditional English weight systems, and is the only unit that is equal throughout the troy, avoirdupois, and apothecaries' systems of mass.: C-6 The unit was based on the weight of a single grain of barley, considered equivalent to 1 1 â 3 grains of wheat.