A closer look
If you pour shampoo from a height into a puddle of itself, it occasionally defies gravity and shoots a liquid lasso straight back at you. This glitch in reality is the Kaye effect. Because shampoo is a shear-thinning non-Newtonian fluid, the impact of the falling stream creates a dimpled layer of highly thinned, slippery liquid. The incoming stream practically ricochets off this frictionless micro-puddle, deflecting outward in a bizarre, leaping arc. It’s your hygiene products fighting back.
