A common delivery system for this is a styptic or hemostatic pencil (not to be confused with a caustic pencil ). This is a short stick of medication . Anhydrous aluminium sulfate is the main ingredient and acts as a vasoconstrictor in order to disable blood flow. The stick is applied directly to the bleeding site. The high ionic strength promotes flocculation of the blood, and the astringent chemical causes local vasoconstriction. Before safety razors were invented, it was a standard part of a shaving kit and was used to seal shaving cuts.  Some people continue to use styptic pencils for minor skin wounds from safety or electric razors. 
From the three avenues of traveling, namely the waterways, airways and the roadways. Individuals use roads to travel over short to medium distances. They either use a card or other mean of private or public transport. With the improvement of science, mechanical and electronic engineering, people have now been provided with another way of transportation, more popularly referred to as the hoverboard . Here are a few of the major benefits associated with hoverboards:
• Environmentally friendly
The hoverboard doesn’t need any fossil fuel to run meaning that its use will not lead to any carbon emission. Apart from reducing the dependence on non-renewable fuel sources, the use of these vehicles will also limit air pollution. The issue of noise pollution can also be sorted out since the vehicles make little or almost no noise.
• Within your means
Not everyone can afford to buy a car. Conventional fuel vehicles are costly, you have to part with a lot of money to get one. But what about people with average income or the students? Should this set of people be exempted from the luxury of having their own private transport? The answer is definitely no. You should consider getting a hoverboard if you’re not in a position to own a car.
• Easy to sustain
These vehicles are not really complex. Therefore, you can easily understand how they work by going through the user manual. As the hoverboard is made for people irrespective of their age groups, even kids, you can rest assured that they are safe to handle and also durable.
• Saves Space
Another benefit associated with the use of these state of the art vehicles is that you don’t need a garage to store them like what’s obtainable with the conventional fuel vehicles. These are portable and small meaning that they may be stored anywhere. All you are required to do is charge them and keep them stacked on the shelves, under the bed or behind the door.