Impossible to rinse with just water

I had a similar mask from this brand before rebranding and was very happy with it but very disappointed in this one. I applied it to wet hair after shampooing, waited for a few minutes and rinsed afterwards. I let my hair air dry and a couple of hours later my hair was sticky with oily residue on the length. I thoroughly rinsed them again. It did not help. So I had to rewash my hair with shampoo to get rid of it. My hair is fine and dry, and never gets this oily by itself. I think this mask does not wash out properly without shampoo, at least on my hair. I'll try it as an overnight mask and shampoo in the morning.