I would think lemon juice would be to drying. Don't want dry skin there
The best thing I have ever used for dark circles & for an eye area lotion is Wei East China Herbal Eyes Alive - I used to have bad problems with dark circles - due to lack of sleep & stress. This changed my appearance & it is so luxurious.
I love the Wei East line. I buy everything from
www.hsn.com - they have the best price, better than from Wei's site or from Nordstrom's.