I'm sure that you realize there's a really great place on the web called "www.google.com", which you can use to do research and answer any questions you might have before posting them here for other people to do the same thing you could have done for yourself, had you not been so lazy.
That being said,
http://www.web-holidays.com/garlic/history.asp
Medical Wonder?
Garlic was
believed to cure many aliments. It has been suggested that garlic could cure the common cold, high blood pressure, high fevers, rheumatism, tuberculosis, worms, respiratory problems, toothaches,
freckles, snakebites, whooping cough, baldness, and worked as an aphrodisiac.
To remove freckles, go speak with your dermatologist... odds are, it'll be done with lasers. If freckles are the worst feature you have, you could definitely be a lot worse off...