Kryolan
Aquacolour Interferenz 30ml Pearly White with a hint of Blue, as used by Lynne Jamieson.
Difficult to photograph, these are part of the Duochrome range that reflect 2 colours.
"Aquacolor Interferenz is an iridescent glycerin-based compact make-up, containing no metallic pigments. After drying, it can be gently buffed with a soft towel or with the hand."