Some knowledge about physical sunscreen and chemical sunscreen

Sunscreen is an essential part of skin care, protecting the skin from ultraviolet (UV) rays, sunburn, photoaging and even skin cancer. But with so many products on the market, understanding the difference between physical and chemical sunscreens can help you choose the right product for your skin type and lifestyle.

What is physical sunscreen?

Physical sunscreen, also known as mineral sunscreen, uses natural minerals such as zinc oxide and titanium dioxide as the main active ingredients. These minerals stay on the surface of the skin and protect the skin by reflecting and scattering UV rays.

How does it work?

Physical sunscreen blocks UVA (which causes photoaging and deep damage) and UVB (which causes sunburn) rays from entering the skin by forming a protective barrier on the skin.

Main features of physical sunscreen:

Instant protection: takes effect immediately after application, no waiting time for absorption.
Broad-spectrum protection: Most physical sunscreens can naturally protect against UVA and UVB without adding other ingredients.
Gentle and low irritation: Mineral ingredients are more suitable for sensitive skin, acne-prone skin and other problem skin.
Environmentally friendly: Many physical sunscreens are designed to be reef-safe and do not contain ingredients that harm marine ecology.

Disadvantages of physical sunscreens:

White residue: May cause white marks or graying on dark skin.
Thicker texture: It feels heavier to use and is not as easy to apply as chemical sunscreens.

What is chemical sunscreen?

Chemical sunscreens protect the skin through organic compounds such as avobenzone, octocrylene and oxybenzone. These ingredients absorb UV rays and convert them into heat for release.

How does it work?

Chemical sunscreens penetrate the surface of the skin, and their active ingredients absorb UV rays and convert them into less harmful heat energy, which is excreted from the body.

Key features of chemical sunscreens:

Light texture: Chemical sunscreens are easier to apply and evenly distribute, and they feel lighter to use.
No white marks: Especially suitable for people with medium to dark skin tones, they can naturally blend into the skin color.
Waterproof and sweat-proof: Many chemical sunscreens are designed to be water-resistant and sweat-resistant, which is very suitable for sports or outdoor activities.
Disadvantages of chemical sunscreens:
Delayed effect: You need to wait 15-20 minutes after application for it to take effect.
Possible irritation: Some active ingredients may cause irritation to sensitive skin or the eye area.

How to choose the right sunscreen for you

For sensitive skin
Sensitive skin, red blood streaks or eczema skin are more suitable for mild physical sunscreen.

For active lifestyles
People who need a light, waterproof formula can choose chemical sunscreen, especially for sports and swimming.

Daily use
The light texture of chemical sunscreen is more convenient and practical for daily commuting or makeup base.