Fake or Real or different colors?

I have been using Hoola for many years, I sometimes buy it on ebay...but what I have discovered there is either fake Hoolas on ebay or there is different shades of Hoola. Sometimes I will get one the will leave your face looking really tan, and then another times I get one that seems like a mat tint and does not tan your face like some I have had before. Is there fake Hoolas out there because I can really tell the difference or is there different shades of Hoolas? Thanks