First of all, I am confused why they have picture of onion when it does not seem to be onion oil. I read a little bit about onion black seed and it is in fact called Klonji or Nigella sativa. Klonji is good anyway.
Coming to this oil, it is much better than their so called 10 in one miracle oil which I used for 7-8 months without any benefit and that didn't smell good.
It was sealed properly and manufactured last month (Feb, 2019). They have added fragrance to this oil and it smells good. I am not sure whether it is natural or artificial fragrance. The oil is non sticky as they claim and gets absorbed better than their 10 in 1 oil. Because of this non-stickiness it could be applied every night.
WOW products are mostly good but it is a bit expensive Klonji Oil.
I could not use it regularly so cannot tell you if it is effective or not but it is not bad and did not cause any issue whenever I used it. So, it actually might have helped.
Deducting one star because of price and confusing onion picture.