The Portrait Set of forty half-stick pastels from Sennelier offers a large selection of the subtle tones required by portrait painters. Skin tones and shadows are created by blending the 100% pure pigment colors. The 20 half-stick sets are economical – giving the artist twice as many colors to choose from than a 20 full size set. WARNING: This product contains a chemical known to the state of California to cause cancer. (Unbound Titanium Dioxide)