What is the effect of UV exposure on acne?

The correct answer highlights the significant impact of UV exposure on acne, indicating that it can worsen the condition and lead to post-inflammatory hyperpigmentation. UV radiation can cause the skin to become inflamed and may exacerbate existing acne due to the increase in oil production and irritation it can trigger. Additionally, UV exposure can lead to the darkening of acne scars, a phenomenon known as post-inflammatory hyperpigmentation, making existing blemishes more noticeable and potentially complicating the healing process. This understanding emphasizes the need for proper sun protection, especially for individuals prone to acne, to not only maintain clear skin but also to prevent further discoloration and scarring that can occur as a result of UV damage.