Gemma Chan's Favourite Foundation Gemma Chan divulged her favourite foundation to Vogue in a Beauty Secrets YouTube video: the Bobbi Brown Skin Long-Wear Weightless Foundation SPF 15 ($52). She uses it "just where I need to balance out my complexion a bit." Image Source: Getty / Theo Wargo Bobbi Brown Skin Long-Wear Weightless Foundation SPF 15 $52 from sephora.com Buy Now