Possible Clues:

• A blemish hidden by mother's cosmetic
• Great Lash from Maybelline, e.g
• Mother's endless worry? Answer is cosmetic
• It may run from an emotional situation
• African people mostly accepting vehicle colouring
• Makeup applied with a wand
• It may run when you cry
• War paint for eyelashes?
• Sephora purchase
• A disfigurement hidden by the old lady's cosmetic