Doctors want you to know just one bad sunburn can double your risk of getting skin cancer.

One fluid ounce could protect you from looking like this.

Make sure your sunscreen is at least 30 SPF.

It needs to be a broad spectrum that protects against UVA rays.

UVA rays are types of rays that cause skin cancer and aging.

People should apply sunscreen 30 minutes before going outside and every 2 hours after that.