These FISC Silicone Pigments (AKA Functional Intrinsic Skin Colors) are the fundamental basics of all human skin tones.
Adding a few drops of these pigments to your clear Platinum silicone will give you an accurate foundation to mimic human flesh.
Mixing ratio is 2 to 3 drops per 10 grams of catalyzed silicone, (2 drops of pigments for softer silicones or silicone with additives).
These pigments go a long way. One 30 grams bottle can tint over 3,300 grams of catalyzed silicone (or approx. 7.2 pounds or 116.4 oz).
While the 500 grams bottle can tint over 100,000 grams or 100 kilos (approx. 27 gallons or 220 pounds) or more depending on the softness of the silicone.
Now THAT'S a lot of silicone!