Understanding Your Sunscreen: What You Need to Know First
Sun protection is a fundamental part of skincare—especially during the summer months. But with so many options available, choosing the right sunscreen can be confusing.
“Is physical sunscreen safer?”, “Is chemical sunscreen more effective?”
Sunscreens aren’t something you choose based solely on SPF. The way they block UV rays, the active ingredients, and your skin’s sensitivity all matter.
This guide breaks down the differences between physical and chemical sunscreens, product recommendations by skin type, and what to know before choosing your SPF.
Why You Need Sunscreen Every Day
Sunlight contains both UVA and UVB rays, which affect the skin in different ways based on their wavelength and how deeply they penetrate.
- UVA (320–400nm) penetrates deep into the dermis. It damages collagen and elastin, leading to wrinkles, loss of firmness, pigmentation, and photoaging.
- UVB (280–320nm) affects the epidermis. It causes sunburn, redness, and DNA damage, and is a major factor in skin cancer.
☀️ UVA can penetrate windows and clouds, making daily sunscreen essential—even indoors.
What Do SPF and PA Ratings Really Mean?
- SPF (Sun Protection Factor) measures UVB protection. For example, SPF 50 theoretically allows you to stay in the sun 50 times longer than without protection. Note: these results are based on lab conditions—sweat, friction, and real-world use reduce this time.
- PA (Protection Grade of UVA) indicates UVA protection. Developed in Japan, this system ranges from PA+ to PA++++. The more plus signs, the greater the UVA defense, which is crucial in preventing photoaging.
⚠️ A higher SPF or PA isn’t always better—choose based on your skin’s needs and lifestyle.
Physical vs. Chemical Sunscreen: What’s the Difference?
| Category | Physical Sunscreen | Chemical Sunscreen |
|---|---|---|
| How it works | Reflects UV rays | Absorbs UV rays and converts them into heat |
| Key ingredients | Zinc oxide, Titanium dioxide | Avobenzone, Octocrylene, etc. |
| Pros | Low irritation, works instantly | Lightweight, invisible finish, makeup-friendly |
| Cons | Can leave white cast, thicker texture | Can irritate sensitive skin, takes 15–20 minutes to work |
Physical Sunscreen Recommendations:
- [ISOI] Super Mild Calming Sunscreen
- [Dr.G] Green Mild Up Sun Plus
- [Goodal] Heartleaf Calming Physical Sunscreen
Chemical Sunscreen Recommendations:
- [d’Alba] Waterfull Essence Sun Cream
- [Torriden] Dive-In Watery Moisture Sunscreen
- [Cell Fusion C] Aquatica Cooling Sunscreen
Best Sunscreen by Skin Type
- Sensitive skin → Physical / Non-nano / Low-irritation formulas
- Oily or acne-prone skin → Non-comedogenic chemical sunscreens or hydrating physical sunscreens
- Dry skin → Chemical sunscreens with moisturizing ingredients
- Combination / Dehydrated oily skin → Lightweight chemical or hybrid formulas
Sunscreen FAQs
Q1. Is there a physical sunscreen without white cast?
→ Yes! Many “non-nano” formulas minimize white cast significantly.
Q2. Why does chemical sunscreen make my skin feel hot?
→ Chemical filters convert UV into heat, which can temporarily raise skin temperature. If you’re heat-sensitive, try switching to a physical formula.
Q3. Can I reapply sunscreen over makeup?
→ Yes! Use sun sticks, cushions, or setting sprays with SPF to reapply without ruining your makeup.
Final Thoughts
Using sunscreen daily is one of the most effective ways to prevent premature aging.
Physical sunscreens are ideal for sensitive skin, while chemical formulas are often preferred for daily wear and under makeup. Choose based on your skin type, activity level, and environmental exposure.
✨ The best sunscreen is the one you’ll use consistently—make it part of your everyday skincare habit!
Neo Mirae is a specialized cosmetics company that develops and manufactures customized sun care products tailored to seasonal needs and skin types.
We offer a full range of UV protection solutions, including both chemical and physical sunscreens, to help enhance the value of your brand.
🔹 Minimized irritation, maximized protection
Our gentle, low-irritation formulas deliver effective UV defense—combining the lightweight comfort of chemical sunscreens with the skin-safe barrier benefits of physical sunscreens.
🔹 Tailored formulation to fit your brand
From SPF and PA levels to texture, absorption, and fragrance, every detail can be adjusted to align with your unique brand concept.
🔹 Integrated global support system
We provide end-to-end services including certification, regulatory compliance, and export support, along with sustainable packaging and international logistics solutions.
✨ If you’re planning to launch sun care products that address various skin concerns—such as sensitivity or tone-up functionality—
partner with Neo Mirae to develop high-performance solutions that meet seasonal and market-specific needs.
📩 Neo Mirae — Your Total Beauty Solution Partner for Brand Success
