Just one Super HydroDrop makes 500 mL of luxurious foaming hand soap & fits perfectly into a foaming pump bottle. Our dissolvable drops are made with naturally derived vegan-friendly ingredients & come in easy-to-recycle plastic-free packaging. Each of our drops supports our mission by providing 16 liters of fresh water to communities in developing countries via the Made Blue Foundation. Soap Type: Foam; Scent: Coconut Acai; Personal Soaps Application: Hand; for Use With: SOAP2O HydroDrop Refills.