What is the difference between a chemical and a mineral/physical sunscreen?

A chemical sunscreen works by absorbing into the skin, converting the sun's harmful rays into heat. It then releases the heat from the body. On the other hand, a Physical Sunscreen forms a protective layer on the skin and reflects back the sun’s UVA and UVB rays, It does not let the harmful rays penetrate into your skin.

How effective is Just Herbs’ Tinted Serum Sunscreen?

Just Herbs’ Tinted Serum Sunscreen is a physical sunscreen with SPF 50+ that provides broad spectrum protection with PA+++. With the infusion of Aloe Vera and Pomegranate, this sunscreen nourishes & soothes the skin while protecting it from sun damage.Source: https://www.piedmont.org/living-better/the-difference-between-physical-and-chemical-sunscreen#:~:text=Chemical%20sunscreen%20absorbs%20into%20the,and%20reflects%20the%20sun%27s%20rays.