I use a lot of this stuff, but I don't use it everyday. If you use it once a week it could last about a month and a half but for everyday use or every other day usage I would say about three weeks. Warning don't use it with other products it will clump even with other Ouidad products.
You need such a small amount of this product, the bottle should last a long
time. I can't tell you exactly,because I haven't finished a bottle yet. But it is
the type of gel,you only need a little bit of. My hairstyle lasts all day,I'll touch
up with the same brand herbal refreshing spray It's all you need.