Hello. I am 24 years old female, 5 feet 7 inches, weighing 68 Kg. For two weeks I ve been having unilateral facial muscle twitches, particularly the right depressor anguli oris. It worries me because lately,approximately 3 weeks, I ve been using this cheap lipstick which may possibly contain high levels of lead, and I m wondering if these twitches I ve been having is indeed a sign of lead toxicity?Or is there any other explanation for it?