not waterproof new product gives to much powder [SEP] the sponge is refilled with the wet powder buy making contact with the sponge in the cap when opening the stick you ll feel the spring action of the sponge push downthe stencils are sorta thick and very hard to use as they don t bent well i heated mine up with a dryer to give it bend ability not ideal for meeven when the stencil is able to bend to your face i found the stencil is still thick so you really have to pounce the sponge to get it to touch your eyebrows when it s new the sponge has so much product on it that you end up with super dark brows and wasted product all over the stencil maybe a separate sealable top with product and a top that is just a top would be good you just pounce put the top with product on when needed