Acne can manifest in various forms, including blackheads, whiteheads, papules, pustules, nodules, and cysts. Each type has its own characteristics and requires specific treatment approaches.

The effectiveness of acne treatment varies depending on factors such as the severity of the acne, the chosen treatment method, and individual skin response. It may take several weeks to see noticeable improvement, and consistent treatment is often necessary for long-term results.

Some acne medications, particularly oral retinoids like isotretinoin, are not safe to use during pregnancy due to the risk of birth defects. It's important for pregnant women to consult with their healthcare provider or dermatologist before starting or continuing any acne treatment to ensure the safety of both mother and baby.