Possibly my most regrettable purchase

I purchased the eyeliner version of this (pretty sure it is the same formula), used it once, and loved it. About a month later, I went to use it again, and the product had the consistency of clay! Nothing would stick to the brush, let alone apply to my eyelid. I even tried warming it up by setting the pot in a tiny bit of hot water, and it just made it clumpy like melted clay. SO not worth the money for the dismally short shelf-life! Will not repurchase.