I got this from chatgpt:

Skin cancer statistics before and after the invention of sunscreen have shown significant changes:

Before sunscreen was widely available, skin cancer rates were generally lower. However, it's important to note that this could be due to factors such as limited awareness, less outdoor recreational activity, and less comprehensive data collection.

After the introduction and increased use of sunscreen in the mid-20th century, skin cancer rates started to rise. This seemingly paradoxical increase is partially due to improved awareness, increased outdoor activities, and better reporting of cases. Sunscreen can provide protection against harmful UV radiation, but it doesn't eliminate the risk entirely.

It's important to continue using sunscreen and taking other sun protection measures to reduce the risk of skin cancer, as it remains a significant health concern. Skin cancer statistics may vary by region, and other factors, such as genetics and lifestyle, play a role in the incidence of skin cancer.