and where can you bye it?
What is the internet and where can I find it?http://www.google.co.uk/#hl=en&nfpr=1&&sa=X&ei=ZblETN2NOsqD4QblptCoDg&ved=0CBgQBSgA&q=photochromic+dye&spell=1&fp=28ec045743156be6 (have a look first, please) L
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I look it up on google first!
And what did you find? (six months ago) L