These Molotow Refills contain not just ink, but a highly-pigmented, acrylic-based paint that is completely solvent free and dilutes with water. It is high-covering, and quickly dries to a silky matte sheen. The paint is 100% UV and weather resistant and can be used indoors and outdoors. All colors are intermixable. All refill colors are available in 30 milliliter bottles with a fine dispenser. Can also be used as a miniature dripstick. Note: when mixing paint with other products, testing the mixture on a suitable spot before final application is advised.