A lot of reasons can trigger your acne. It can be caused by certain drugs, medications, or exposure to some chemicals, but most acne is an inherited tendency. Also, it can be :
Dairy
Sugar
Food sensitivity
Vitamin B12
Biotin
Inflammatory foods
Hormonal imbalance
comedogenic makeup, and skincare
wrong skincare routine
Birth control
Haircare
Toothpaste
Laundry detergent
Stress
Thanks for sharing. Trigger my acne. 🙂🤗