For those who are interested in products to lighten dark skin I 've chosen those that are most popular (and cheapest) in the market. All products were tested in the laboratory at the moment of purchase. The main reason why people buy dark skin products is that the price is so low. The prices of products in the market are low because most of the products that people use are already produced in big factories. For instance, the products that you buy at the market is made by the biggest company in India. These products are made in small factories, which are located in big cities and they are expensive. These companies often produce dark skin products in batches, and they use a lot of chemicals in them. It is very hard to find the ingredients of products with which it is possible to avoid the side effects. So, some people choose a dark skin product and they are sure that it is not harmful to their skin. If they see the results in a few days, they feel that it was worth it. Some people prefer to buy products made in big factories, because they are easy to get information about, and the factories are often owned by big companies.