Dermacia's Lycogel ($57.95) is a foundation that won't streak even during a New York City heatwave. Originally designed for post-op camouflaging, this is by definition not going to inflame or irritate either. It's not for those who want light, sheer coverage, but it works if you want to keep your cool.
Dermacia claims that Lycogel actually increases oxygen to the skin. I find that hard to buy, frankly. On the the other hand, claims that Lycogel is up to 13 times more "transfer resistant" than competitor foundations is more plausible.
For such a hard working foundation, the ingredients are fairly benign. There is a mineral sunscreen. Butylene/ethylene/propylene copolymer isn't as alarming as it looks. It absorbs oil and crops up in products generally aimed at the sensitive of skin. Along with Nylon-12, which absorbs moisture, this complex helps the product stay put. In addition to a number of parabens, the remainder is made up of mostly silicones with some yeast extract.
Active Ingredient: 6.65% Titanium Dioxide
Other Ingredients:Water, Isododecane, Butylene/Ethylene/Propylene
Copolymer, Cyclopentasiloxane, PEG/PPG-20/15 Dimethicone, Butylene
Glycol, Diocetyldodecyl Dodecaneodioate, Silica, Methicone,
Polyglyceryl-4 Isostearate, Cetyl PEG/PPG-10/ Dimethicone, Hexyl
Laurate, Nylon -12, Sodium Chloride, Iron Oxides, Saccharomyces Lysate
Extract, Penoxyethanol, Cyclomethicone, Quaternium - 18 Hectorite, SD
Alcohol 40, Methylparaben, Butylparaben, Ethyparaben, Propylparaben.