There have been many problems with other products released on the market in the past, and so it's important that you understand the best ways of finding a product, the best ways of applying it, and the results you can expect.
You might simply assume that the best way to get good advice would be to see your doctor, but this isn't the case at all.
You see, doctors in the US are still prescribing a cream containing a chemical called hydroquinone to patients with pigmentation disorders such as hypo-pigmentation.
Hydroquinone studies by the FDA have shown that it is extremely toxic and even deadly when used for long periods of time.
It is actually the non-prescription creams that doctors are less likely to recommend that are the safest way to bleach your skin, and so it's a question of finding the right one of those.
You can talk to your pharmacist, but they are only told how the cream works by the people who managed to get the cream sold through that particular pharmacy, so they are not experts in that particular area.
To find someone who is an expert in skin whitening, you have to look online, and there are various medical journals, Wikipedia entries, and independent reviews that can back up the quality of any particular skin bleaching product being sold online.
The point I was trying to get across is that you don't necessarily trust your doctor, you don't necessarily trust your pharmacist, and you don't want to trust that your cosmetic surgeon is charging you a fair price for a treatment like this.
What you should probably do is research the chemicals involved in the skin bleaching process.
Substances such as arbutin, glycolic acid, kojic acid, sepiwhite FSH, etc, and find out what the expected results are for each one, and whether there are any reported side effects.
The most obvious place to look for that sort of information is on the huge skin whitening Wikipedia page which is updated regularly by all sorts of people including doctors, because it ranks top of the page for almost every Google search on that subject.
There, you can find out what you need to know about the active ingredients you should be looking for in a skin whitening cream, and then it's just a matter of finding a trusted company that has been around for years that uses those chemicals in their formulations.
To save yourself some time, why not simply take a look at this site, which will answer all your questions, in the one place: http://www.skinbleachingcreamshop.com/