Beauty must haves for me are:
No7 radiant glow foundation. I think it's fab - lovely texture, and it's light reflecting so makes the skin look smoother.
Rimmel cream blusher - pretty cheap, but nice consistency and a good colour.
Touche eclat
Benefit High Beam - recent discovery, and I love it! Gives a v subtle sheen on the cheekbones, which makes them look more prominent, but not in a scary 1980s way. Definitely freshens up the whole face, I think.
L'Oreal Voluminous mascara. They've brought out so many 'new and improved' mascaras, but I don;t think any of them beat good old Voluminous. Max Factor 2000 Calorie is a decent alternative.
If you need an eyebrow pencil, No17 do a good one. Stays put, and is a natural colour (for me, anyway )
Blistex lip balm is great.
Shiseido Mauve Brown lip liner is a great neutral colour.
I'd be hard pushed to do without any of these products actually. [vain]