"I seriously geek out over new skincare technology. Talk to me about delivery systems and molecular weight, and I get very, very excited. Well, let me tell you: Good Science Beauty is the newest, appropriately-named brand to titillate my dorky, science-loving side, and the Good Science Beauty Skin Brightening Cream ($98) is my favourite from the collection. Glutathione and melatonin are encapsulated in a special type of silicon that helps the ingredients get to the layer of skin where they can have the best brightening benefits. Because it's a brightening moisturiser, I'm using it instead of both my regular serum and face cream, and after just a few weeks, my dark spots look lighter. Tech that saves time and really works? That's my favourite kind." — DD