Tretinoin (Retin-A) for Treating Cystic Acne: How and Why It Works
Cystic acne is one of the most severe forms of acne, characterized by painful, inflamed nodules that can linger for weeks or even months. This condition can significantly affect self-esteem and lead to emotional distress. While many treatments are available, one of the most effective and widely used options is tretinoin, commonly known by its brand