What are some safe and effective ways of lightening my skin?

You should go see a dermatologist or go to a medical spa. There is product called %26quot;hydroquinone%26quot;. This is what is used to help address pigmentation problems. This would definitely help with discoloration. As far as scarring, you will need something else. Try using vitamin e first. I would recommend that for things like acne blemishes and/or scars. If its severe scarring, again you should speak to a specialist. There are a variety of services that can be done including microdermabrasion and chemical peels.