Bottle gone green

[abbeygrace]

Hiya just a quick question, I keep my solution in my porch as its cold but one of my bottles was tipped over (lying flat) and they top of the bottle (inside) has gone green! Is this just stain from the tan? There's not much left in it but can I still use it? Thanks xx

 

[Trinitia]

The lid would of only gone green because solution migth of touched the top, then the air in the bottle may of turned it green. Yea it's still okay to use, maybe just give the lid and top of the bottle a good clean!
Hope this helps
Trinitia xxx