Keratin Replenishing Mist by Ion

Is it sulfate free ?

Tangled hair, rat's nest, impossible to comb! Which product would be better: this replenishing mist or the smoothing tonic?

Can this be used on dry hair as well? I am trying to get rid of the frizz the next day after my hair has already been washed and dried.

Do you know when this will be back in stock?