Is hydroquinone safe? could it be used most oftthe time?

Yes: It is safe if you know you aren't allergic to it. Before using it on a larger area of skin, test it on a small inconspicuous patch of skin first to make sure you don't turn bright red, or painful, or itchy, or blistering.Be careful not to get it in your eyes, or on the inside of your nose or mouth and be careful in the sun or when using tanning beds as it makes your skin more sensitive to the sun