This is easier than it sounds. It is possible to use one of many key word lookup utilities or websites (simply look for'keyword study' and you will discover different options) and you'll be able to check your competitors websites. You use these key words within your website and also your various Internet advertisements.
Here I must mention you can also try these at the cases of freckles and other marks. Nevertheless, these might not be helpful for clogged pores, such as lentigo or additives as those need a different sort of treatment procedures.