I don't use this often, only when I feel my hair is really dirty and gross - seems to clean it right up!
The best part about this product is the smell! I find my hair just smells lovely and clean after using this product. I also like the packaging' simple and a nice size. And of course, it does seem to work for my hair - mind you I don't really get dandruff per say, rather if my hair is dirty (or dry skin from sunburn....). Rather I find it is good if your hair is feeling greasy and just all around gross!
To be honest, it may work for me because I do not use it often. I use a different shampoo.conditioner for everyday and only use this when my hair needs it. So that might contribute to it working for me!
The first time I used this, it was GREAT! I mean AMAZING! It got rid of sooooooooo much snowflakes for me! All of them smelled so good. My hair would feel soft and bouncy and look so silky and smooth with minimal frizz and flyaways..... But after about 2 years using it religiously I noticed it was getting less and less effective. So I've since been using another shamp/cond combo. I'm hoping that once I start using it again, it will start working for me again.