Holy Basil (Tulsi) for long has been used in Ayurvedic medicine and in home-remedies to treat colds , fevers , coughs , skin diseases and also to provide relief in eyelid inflammation and itching . As a beauty aid , it’s used in face-packs ; it’s found to be quite effective in treating acne as well. Read all about it here . Now for the most interesting part. Recent research has found that Tulsi can combat the harmful effects of ageing, thus confirming its usefulness as a youth-promoting herb. The Details: In the first formal study of the herb, researchers, led by Dr Vaibhav Shinde from Poona College of Pharmacy, Maharashtra, India, studied the anti-ageing properties of the herb and found that holy basil extract was effective at actively searching for and eliminating free radicals.