Use this trick to transform any eyeshadow into a long-wearing liquid eyeliner. Simply take some saline solution (the kind used to clean contact lenses) and squeeze a drop onto the back of your hand. Dip the end of an eyeliner brush or small angled brush into the saline just enough to moisten the brush — you may need to lightly blot the brush on a tissue if it gets too wet.
Gently smudge the end of the brush into the eyeshadow of your choice and then use it to line your eyes as you normally would. The result is a long-wearing liner in as many (or more!) shades as you have eyeshadows. Just try combining different colors of eyeshadow to discover your own custom shades
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