How many applications does Dior Diorskin Airflash last?

I would like to try this product, but the price is a little high. I have read some reviews that say it doesn't last very long. It would be great to try but not worth the money to me if it doesn't last. Also, if you have tried any other similar products please let me know how they compared to this one. Thanks|||it last pretty long, compared to mac and Chanel. Just be careful when you spray it on.