Yes, there are various homeopathic medicines for all types of skin discoloration. I suggest you get it examined properly so that I can prescribe you the right remedy.
Next Steps
You can consult me online on Practo to give proper case history.
Health Tips
If it's only for cosmetic purpose/detan, you can have almonds, citrus fruits like tomatoes, oranges, sweet lime, amla which are good for the glow of skin in general. They are rich in
vitamin C & E which is good for the skin.