Dry Shampoo, Yeah or Na?

Recently I got a fancy new hair color and while it looks amazing it has a lot pf red in it and that is not a color I can maintain. As in it fades quickly....with each wash there is a little less. I only wash my hair every other day but I am wondering it I can push it to three or four days to help maintain my color.

So I am considering dry shampoo. Does it really work? More importantly do the DIY dry shampoos work?It don't have a problem spending a lot of money on hair products but if I can make and home and save my money for books, shoes or more books.

They seem pretty simple to make. A little cornstarch, baking soda and essential oil and you have dry shampoo. Now the question is should I try it. Do I dare try it?

Do I risk oily icky hair on the chance that it works?

Please let me know that you think of dry shampoo and the DIY versions?