Doesn't Work Maximally

I bought this shampoo for my hubby on the thought that his regular anti-dandruff shampoo doesn't help him much with his dandruff issue. It's Sunsilk Anti Dandruff Shampoo that comes in a blue bottle of 90 ml. It says it has been formulated with citrus cream to help demolish the dandruff. My hubby loves the fragrance, though. But does it work great with the dandruff? Well, so-so. My hubby said that it did help in making the dandruff go away, but not for long. The dandruff will always come back again. So, it doesn't differ that much with his regular anti dandruff shampoo, except that this has a nicer smell. I once tried this although I don't have dandruff issue. Honestly, I like the citrus smell. But other than that, I don't feel any great sensation or whatsoever. So, hmmm.. I think this is not for me. As for my hubby, he said if he had any other choice he would want to try since he's been annoyed with his dandruff for so long.