hi i live in Barbados in the carribean our climate is very hot every year there is not kind of cold temperture. i went to a dermothologist to realize that i was diagnosed with spsorias and my dermatholigist prescibed hyrdroquinone 4% and tretinoin 0.025% cream mix together to carry way the dark marks but i found that it was getting around the area of the dark mark very light and the rest of my complexion is darker and im very scared cause i want to know what will bring back the colour of my natural complexion.