All About Sunscreen: What It Is, Why It Matters ☀️

Sunscreen isn’t just a summer essential — it’s a daily skincare hero. Your skin needs protection every single day.

- What Is Sunscreen?

Sunscreen helps protect the skin from harmful ultraviolet (UV) rays from the sun. There are two main types of UV rays:

  • UVA: Penetrates deep into the skin, causing aging, wrinkles, and pigmentation
  • UVB: Affects the surface layer, leading to sunburns and skin cancer

A good sunscreen blocks both — this is called broad-spectrum protection.

- Why You Need It Every Day

Even on cloudy days or indoors, UV rays can reach your skin. Daily sunscreen use helps:

  • ✅ Prevent premature aging
  • ✅ Reduce the risk of skin cancer
  • ✅ Maintain an even skin tone and healthy barrier
  • ✅ Protect against blue light and environmental stressors (with the right ingredients)

- What’s Inside: Key Ingredients

Sunscreens typically use a mix of active and supportive ingredients:

  • Mineral (physical) filters — like zinc oxide or titanium dioxide, which reflect UV rays and are gentle on sensitive skin
  • Chemical filters — like avobenzone or octinoxate, which absorb UV rays and convert them into heat
  • Plus soothing and antioxidant ingredients such as niacinamide, red algae, or Centella Asiatica to calm and strengthen skin

- Texture, Feel & Formulas

Modern sunscreens come in a variety of textures designed for comfort:

  • Lotions and creams 
  • Gels or fluids
  • Sticks, sprays, and even cushion compacts

Today’s advanced formulas are lightweight, invisible, and comfortable enough for daily wear.

- UVELLA’s Perspective

At UVELLA, we aim to make daily sun broad-spectrum protection a natural part of your skincare routine. Our Daily Sun Serum and Active Sun Lotion are designed to be invisible and weightless. 

Scientific Reference

  • Moloney F.J., Collins S., & Murphy G.M. (2002). Sunscreens: safety, efficacy and appropriate use. American Journal of Clinical Dermatology, 3(3), 185–191.

Reviewed by:
Jungyoon Ohn, MD, PhD
Board-Certified Dermatologist