The PA index is one of the indexes that shows the level of UV protection of sunscreen. Choosing a suitable sunscreen helps protect the skin from the harmful effects of UV rays.

Using sunscreen is a preventive measure to protect the skin from the harmful ultraviolet (UV) radiation of the sun. While sunscreen offers numerous advantages, such as preventing sunburn and premature aging, it also has certain drawbacks, including stickiness, potential skin irritation for certain skin types, and some ingredients being absorbed into the body, etc.