Not a dupe for One Size Powder Melt

I purchased this because all the influencers claimed it was a OS dupe. When I use OS I spray it on my cream makeup to blend, powder, them spray again to melt the powder. I did my usual routine with MIL and when I tried to blend my makeup it all rolled off of my face. Also the price point is not that different. MIL is $17 and OS is $35 but it's twice the size. I would use this on my no makeup days for glass skin but not for makeup