Acne develops when excess oil, dead skin cells, and bacteria clog pores, leading to inflammation and breakouts. While hormones are a major trigger, factors such as genetics, stress, certain medications, smoking, and hormonal conditions like PCOS can also contribute. Some home remedies, including tea tree oil, aloe vera, and green tea, may help reduce inflammation and bacteria, but scientific evidence varies. Combined with gentle skincare, healthy habits, and professional treatment when needed, these approaches can support clearer, healthier skin.