I came across this website at the weekend and thought you might find it interesting. In My Kit is a website of honest product reviews written by Senior Makeup Artists in the US. The founder KJ Bennett describes how it began:
"IN MY KIT was created in 2005 because I understand how expensive and confusing building your first professional makeup kit can be. There are just TOO MANY products out there. I focused on cosmetics and tools that met or exceeded professional artistry requirements for all media formats (photo, film and video). Word got out about this "insider information" and the website began attracting seasoned professionals AND consumers. In less than a year it was being referenced and linked to internationally. In December 2010 it exceeded 1 million unique visitors."
Some of the products are only available in the US but a lot of US companies now deliver to the UK. I hope you enjoy reading it as much as I do.