I need a product designer/engineer

I need a small dispersing pump designed for a portable sponge. I need the pump to suck up the bodywash and then disperse onto the sponge, releasing 3ml at a time. I am open to ideas on how this could work. I was thinking of one way valves as well, maybe have a twisty top that releases the bodywash, then twist back to close. Or a push button that releases 3ml at a time.