The basics Hydro Foundation Color Theory Collection includes all 5 primary pigments to combine and blend into secondary and tertiary shades creating an endless variety of color for the artist.  The benefits Light-weight and completely blendable, this innovative formula is alcohol, fragrance, and paraben free.  The uses Hydro Foundation can be applied with a brush, a sponge, the fingertips, or an airbrush for the ultimate artistic flexibility. The bottom line Hydro Foundation is one product with infinite possibilities.