30ml . Le'Rez Transparent Liquid Pigment is very versatile and can be used as water colorant,  add to paint, add to acrylic or oil mediums to create paint, add to resin ( up to 6%) , add to other paints... possibilities are endless.  To make them opaque add to an opaque color. To turn them into a pastel matte color, add white...30 ml/ 1 oz sqeeze bottle, easy to apply with a pointy nib