There are many positive things to be said about skin whitening's potential thanks to the scores of people who have explored quality treatments. At the same time, however, some users may have experienced poorly-made or dangerous products and treatments that have proved ineffective or even damaging. Understanding skin whitening warnings is often a matter of considering the differences between chemical prescription products and those based on natural formulas. The popular prescription ingredient hydroquinone is often singled out for its potential  as a cancer risk, whereas natural extracts are praised for their gentler approach. Choosing safe products is essential for enjoying skin whitening success.