Hyperpigmentation simply means too much melanin. The condition manifests itself as age spots, melasma, dark or bronze skin patches and excessive freckling. Hyperpigmentation isn't dangerous and doesn't require treatment unless you're cosmetically displeased with it. Acids that slough away the top layers of skin and promote skin regeneration are effective at replacing hyperpigmented skin with new, normal colored skin, according to "The Doctor's Book of Home Remedies II." Lemon juice is a type of natural acid that you can use to fade your hyperpigmentation.
See a doctor or dermatologist to make sure you have hyperpigmentation and not an underlying health condition, like skin cancer, recommends MedlinePlus.
Roll a fresh lemon between your palm and the counter top with moderate pressure. This helps release the juice from the lemon.
Slice the lemon in half. Squeeze on of the lemon halves into a bowl until you can't get any more juice out of it.
Dip a cotton swab into the lemon juice to saturate it.
Dab lemon juice onto clean, dry skin and let it dry.
Treat your skin with fresh lemon juice twice daily. Continue treatment for six to eight weeks, recommends "TheDoctor's Book of Home Remedies II."
Wrap the other half in plastic wrap and place it in the refrigerator to use the following day.