I have used the same jar for like 4 years on and off, (bc i was scared of running out so i would try other things and save my jar for special emergencies) so i have had it for a very long time and it still works just the same as when i got it. This is the best dry shampoo. It gives volume, it lasts a whole day or more, gives instant dry hair appearance, no dusty looking spots (like powders do). Also eco friendly because theres no "spray". Best, perfect, worth the price.