With a good foundation, you get a nice, even basis for the rest of your makeup. This foundation is dermatologically tested, which means it's been tested on humans.
From Amazon
Skin Long-Wear Weightless Foundation SPF 15 No. N-010 Neutral Porcelain 30 ml
Selfridges
Bobbi Brown Neutral Porcelain Skin Long-wear Weightless Foundation Spf15 30ml 30l - Neutral porcelain