⦿ Do not rest your elbows on the table.
⦿ Always scrub your knees and elbows while having a bath.
⦿ Exfoliate these patches everyday. Invest in a loofah.
⦿ Avoid sun exposure.
⦿ Avoid wearing rough fabrics like wool and nylon that create friction.
⦿ Use a heavy moisturizer containing vitamin E and A, twice a day.
⦿ Always apply 30+ SPF sunscreen on your dark knees and elbows.
⦿ Use topical ointments such as Tretinoin (Retin-A) or those containing hydroquinone along with DIY glycolic peels at home to lighten dark patches.