vitamin A and E deficiency in many people with acne
liver, grass fed butter and egg yolks are great sources
https://www.researchgate.net/profile/Khalid-Abdul-Razzak/publication/243464504_Does_the_plasma_level_of_vitamins_A_and_E_affect_acne_condition/links/5e8af7664585150839c40298/Does-the-plasma-level-of-vitamins-A-and-E-affect-acne-condition.pdf
