No BlissGirl in her right mind would recommend any sort of tanning. It's a suicide mission for skin. Here are your options for your uneven complexions: 1) Try a few sessions of microdermabrasion. We have a treatment called crystal clearing? (and lots of other spas offer similar treatments) that literally sandblasts off dead and pigmented skin layers, without causing too much irritation, and very little redness. Because very often the melanocytes (cells that produce pigment in the skin) are more concentrated in certain areas that are darker, exfoliating the skin's surface frequently can help dissolve and disperse the buildup of the darker color! Make sure that if you have these treatments done, you follow up by wearing sunblock. You don't want to leave your newly fresh exfoliated skin exposed to the rays that might have done the damage in the first place! 2) Try skin care with stable vitamin C, or with L-Ascorbic Acid content. Many of the vitamin C products that are on the market have been shown in numerous studies to help relieve hyperpigmentation! You could try Laboratoire Remède Super C Serum followed by a moisturizer with sunblock. Many of my clients have had a tremendous amount of success with this combination. 3) Visit a good dermatologist to discuss the possibility of doing a stronger glycolic or TCA peel. (This depends on your skin type, so someone MUST see you in person to give you good advice.) Some of the stronger peels work in a matter of a week or so- to lighten the skin by a few shades. This type of peeling is only recommended for lighter skin tones, though I can't tell online if you're a good candidate. DON'T TAN! Use sunblock daily. Scrub with exfoliants. Try vitamin A creams too! Use a great neutralizing foundation until you're all even... and let me know how it goes! And, last but not least-- no pigmentation pun intended-- LIGHTEN UP! I bet you and your sister notice your 'uneven complexions' 1000 times more than anyone else does. (Everyone has their own paranoia.) We're rooting for you!