I had heard about products similar with olaplex no.4d but this really made the difference? worth the price and worth to try it

Good as a non whitening dry shampoo but you gotta wait a really long time for the product to refresh the hair. Better not use it right away before leaving home 

It is good, but I didn't find it significantly better than some drugstore options. It does the job but comes at a higher price point. So, I'd rate it 4 stars for performance and value.

I have nothing to complain about with the Olaplex No.4D Volume Detox Dry Shampoo. It easily lengthens my hair's wash cycle by a couple of days and, especially if then tied up on ponytail, makes my hair look more voluminous and like newly washed, and coiffed. The scent is also nice and freshens up the scalp nicely.

The only good thing about this dry shampoo is the smell.