I am using many Patanjali products since one year and I am quite satisfied with the quality of their products. Talking about kesh kanti, overall its a good oil.
Pros:
Ayurvedic product
No side effect
Good results on hair
Non irritating
Good bottle packing
Cons:
Bad smell
Costly
Equally good for all age groups, but because of its smell I use it in night and shampoo next day. But its worth buying as it make hair healthy and also there is no harmful chemical in this product like most of other brands. That’s why I am using it. I think it smells bad because of it’s Ayurvedic ingredients but it’s a little cost to pay for benefit for your hair.