I love how silvery white Charlie’s platinum blonde hair is. Checkout her tumblr: http://lottesskydiamonds.tumblr.com/face for more awesome pictures of her and her gorgeous hair!
When I was trying to bleach my hair as whitest blonde as possible this is pretty much the color I was trying to achieve, completely free of brass, so lovely! Here is a quote from Charlie on how she tones her hair:
The best way to tone your hair is to use toning shampoos and conditioners. My favourite is Touch Of Silver Sensations, which can be brought at Savers or any chemists in the UK, or online outside of the UK. Touch Of Silver do a daily shampoo, a daily conditioner, and a weekly shampoo. To get most the yellow/orange out of your hair first use the weekly conditioner for 5 minutes, then every time or every other time you wash your hair use the normal shampoos and conditioners. If you want silver or grey hair leave the weekly one on for longer and use it every two weeks. Using these will stop yellow coming back. You can also get John Frieda Sheer Blonde purple conditioner, however I find this doesn’t work as well and costs more, but if you can’t find Silver Senstations then this is a great alternative, sold at Superdrug.