We use a specific peel to treat the skin that is effective in lightening the skin. The peel is strong and we often slightly 'over-treat' the section of skin that we want lightened. This will likely result in temporary darkening of the treated skin (why we only use this peel on specific spots and not all over the face), but will peel off within days to reveal lightened skin. The number of treatments and/or success will depend on whether the hyperpigmented area is superficial or deep. As the sun continues to shine, upkeep treatments may be necessary over time. Also, if repeated treatments do not successfully lighten the skin to the desired effect that you would like, I would then recommend IPL or laser (which I do not perform, but can offer suggestions).