The modern medicine we today call aspirin is a chemical modification on the more basic compound called salicylic acid. It is the medicine found in willow bark, which has been used for centuries to reduce fever and dull pain. Doctors and chemists have used natural solvents to obtain this medicine since the time of the ancient Greeks, and even today it is respected for what it can do.
While aspirin or acetylsalicylic acids is entirely artificial, its natural counterpart is found in nearly all living things. It is also abundant in fruits such as blueberries and kiwi. It is essential to normal human biology and tends to promote good bodily function. For these reasons, the body responds well to it and uses it for many things.
It has benefits for the skin, because it helps to dilate blood vessels and pores. In addition, salicylic acid directly kills many microbes and also encourages the skin to shed exterior skin cells. All these things accelerate the healing of a pimple. While it might not disappear overnight, it can relieve the symptoms and cut down the future incidence of acne.
This drug is a major ingredient in many commercial acne products. While willow bark is still sometimes uses as an acne treatment, a cream with other beneficial ingredients is faster and typically more effective. Products exist that competes with major brands while being much cheaper.
The most important thing to know is this is a natural ingredient that is entirely beneficial to the body. There is nothing toxic about it and is readily used in many biological functions. Salicylic acid might be the perfect solution to any acne problems a customer complains about, and millions of people unwittingly use this product every day. Very few complain about side effects and the product is recognized as safe by the FDA.