Skip to main content

Sunscreen vs. Sunblock: What’s the Difference?

min read

By Catherine Roberts

Medically Reviewed by Dr. Jenny Liu, MD

Baby, it’s hot outside, but on scorching days do you lather on the sunscreen or the sunblock? Is there really a difference when it comes to effective sun protection? Let’s find out…

How Sunscreen Works…

When it comes to the difference between sunscreen and sunblock, many of us use the two products interchangeably, when they’re supposed to be used for entirely different sun protection purposes.

Let’s start with sunscreen, a product that helps to minimize damage of harmful effects of ultraviolet radiation from the sun. There are two types of sunscreen: chemical and physical.

How Sunblock Works…

Chemical sunscreens absorb UV radiation and turn the energy into heat so it doesn’t cause damage on our skin.

Physical sunscreens are like a wall and block the UV rays from entering our skin.

Sunscreen Ingredients

When it comes to sun-protecting abilities, sunscreen and sunblock are both effective. However each product utilizes a totally different set of chemicals to get the job done.

Chemical sunscreen ingredients are commonly found as avobenzone, oxybenzone, octisalate and so on. Physical sunscreen ingredients are zinc oxide and titantium dioxide.

Sun Protection Preference

All sunscreens are effective. Physical sunscreens are better suited for sensitive skin and babies. The most important thing is to apply daily, use SPF 30 or higher, and make sure to apply an adequate amount.

MD, Board-Certified Dermatologist and Assistant Professor of Dermatology

Dr. Jenny Liu is a board-certified dermatologist and an assistant professor in the Twin Cities. Her academic interests are complex medical dermatology, ethnic dermatology and medical education. She uses her blog and Instagram (@derm.talk) to educate others on all things dermatology and share her own tips and tricks regarding skin care.

Your Health

Explore

What Do Your Blood Test Results Mean? A Toxicologist Explains the Basics of How to Interpret Them
By Brad Reisfeld Your Health

What Do Your Blood Test Results Mean? A Toxicologist Explains the Basics of How to Interpret Them

Your blood serves numerous roles to maintain your health. To carry out these functions, blood contains a multitude of components, including red blood cells that transport oxygen, nutrients and hormones; white blood cells that remove waste products and support the immune system; plasma that regulates temperature; and platelets that help with clotting. Within the blood […]

Read More about What Do Your Blood Test Results Mean? A Toxicologist Explains the Basics of How to Interpret Them

5 min read

Dietary Supplements and Protein Powders Fall Under a ‘Wild West’ of Unregulated Products That Necessitate Caveats And Caution
By Emily Hemendinger and Katie Suleta Your Health

Dietary Supplements and Protein Powders Fall Under a ‘Wild West’ of Unregulated Products That Necessitate Caveats And Caution

Dietary supplements are a big business. The industry made almost US$39 billion in revenue in 2022, and with very little regulation and oversight, it stands to keep growing. The marketing of dietary supplements has been quite effective, with 77% of Americans reporting feeling that the supplement industry is trustworthy. The idea of taking your health […]

Read More about Dietary Supplements and Protein Powders Fall Under a ‘Wild West’ of Unregulated Products That Necessitate Caveats And Caution

5 min read

Strep A Explainer: Why Invasive Cases Are Increasing, How It Spreads and What Symptoms to Look For
By John McCormick and Juan Manuel Diaz Your Health

Strep A Explainer: Why Invasive Cases Are Increasing, How It Spreads and What Symptoms to Look For

A jump in the number of people with serious illness caused by group A Streptococcus — also referred to as Streptococcus pyogenes or Strep A — has made headlines recently. There has also been a higher than usual number of deaths from group A Streptococcus infections, including in children, leaving people with questions about why […]

Read More about Strep A Explainer: Why Invasive Cases Are Increasing, How It Spreads and What Symptoms to Look For

4 min read