Slope Shampoo / Shampoo bottle

It is difficult to use to the last drop the shampoo so people often cut the bottom of the shampoo bottle to use last drop and when people use shampoo, the shampoo bottle often fall over.
'Slope shampoo' have a sloping bottom and diagonal tube on the inside so we can use remaining shampoo in the bottom of the bottle.
Also, the pump place on the bottle's one side so we can use the shampoo without made the bottle fall over.