Final answer:
A sunscreen that protects against both UVA and UVB is considered a broad spectrum sunscreen. It is important to choose a sunscreen with a high SPF (sun protection factor) of 30 or higher and look for ingredients like titanium dioxide, zinc oxide, and avobenzone that offer UVA protection.
Step-by-step explanation:
A sunscreen that protects against both UVA and UVB is considered a broad spectrum sunscreen.
Broad spectrum sunscreens provide protection against both types of ultraviolet radiation.
It is important to choose a sunscreen with a high SPF (sun protection factor) of 30 or higher and look for ingredients like titanium dioxide, zinc oxide, and avobenzone that offer UVA protection.