I am very sorry to hear about the issue of some of our nail polish drying out. I have checked our production records and found that all Tall 10ML bottle nail polish was produced in December 2012 and the last batch was shipped in mid-2013. It has been almost 15 months since the production of all the nail polish. This is the key factor that has caused the problem, in addition to other reasons. I will investigate more carefully to avoid similar problems in future orders.