Is SPF 70 Really Better Than 50? The Truth About High SPF | Rysun

Does a higher SPF number mean more protection? Our R&D experts at Rysun Biotechnology compare SPF 50 vs 70, explaining the law of diminishing returns in sun care.

 Is SPF 70 Really Better Than 50? Decoding the Numbers with Science

Introduction

In 2014, our founder Ivy Wong recognized a significant issue in the beauty industry: the gap between marketing claims and actual product quality. At Guangzhou Rysun Biotechnology, we believe in empowering our 700+ global brand partners and their customers with science-backed transparency.

One of the most debated topics in our Research Institute is the "SPF Race." Many consumers believe that SPF 70 offers significantly more protection than SPF 50. But is that really the case? Let’s look at what our team of doctors and professors has discovered through our 50-step inspection procedures.

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1. The Law of Diminishing Returns

To understand if SPF 70 is "better," we must first look at how much UVB radiation each number actually filters:

• SPF 30: Blocks approximately 96.7% of UVB rays.
• SPF 50: Blocks approximately 98% of UVB rays.
• SPF 70: Blocks approximately 98.5% of UVB rays.
• SPF 100: Blocks approximately 99% of UVB rays.
• The Verdict: The jump from SPF 50 to SPF 70 only provides about a 0.5% increase in actual protection. While technically "better," the margin is much smaller than the numbers suggest.

2. The "False Sense of Security" Risk

At Rysun, our multidisciplinary team—ranging from dermatologists to pharmacologists—warns against the psychological trap of high SPF.

• The Problem: Consumers using SPF 70 often feel "invincible," leading them to stay in the sun longer or skip reapplication.
• The Reality: No matter the number, sunblock breaks down. Whether it's SPF 50 or 70, you must reapply every 2 hours to maintain safety.

3. Formulation Stability and Skin Sensitivity

Achieving an SPF 70 rating requires a significantly higher concentration of chemical UV filters.

• Increased Irritation: Higher concentrations can sometimes lead to skin sensitivity or "pilling" of the product.
• The Rysun Standard: Utilizing our 253 intellectual properties, we focus on creating "Practical Solutions." For most users, a well-formulated, stable SPF 50 that passes our 50-step quality check offers the perfect balance of high protection and skin comfort without the heavy chemical load of ultra-high SPF ratings.

4. It’s Not Just About UVB: The Broad-Spectrum Factor

Inspired by Swiss anti-aging experts, Rysun’s R&D focuses on Broad-Spectrum protection. SPF only measures UVB rays (which cause sunburn). However, UVA rays are responsible for long-term skin aging and DNA damage.

• An SPF 70 that isn't "Broad-Spectrum" is actually less effective for skin health than an SPF 50 that offers superior UVA protection (measured by PA ratings).

5. Why Rysun’s R&D Leads the Way

With 10 years of experience and 105 product patterns, our Research Institute doesn't just chase high numbers. We focus on:

• Photostability: Ensuring the filters don't degrade in the heat.
• Texture: Making the product affordable and pleasant to wear daily.
• Safety: Every batch exported to our 50+ partner countries undergoes 50 inspection procedures to ensure the SPF 50 or 70 on the label is exactly what is in the bottle.

FAQs

Q1: Should I choose SPF 70 if I have very fair skin?
A: If you are extremely prone to burning or have a medical history of skin sensitivity to UV, SPF 70 can provide that extra 0.5% margin of safety. However, the amount you apply is more important than the number.

Q2: Does Rysun manufacture both SPF 50 and SPF 70?
A: Yes. We customize formulations for over 700 brands globally. We ensure that even our high-SPF products maintain the strict quality and "Swiss-inspired" anti-aging benefits our company was founded upon.

Q3: Why is SPF 50 the most common recommendation?
A: It is considered the "Sweet Spot." It provides 98% protection, which is sufficient for almost all activities, and allows for a more skin-friendly, lightweight formula compared to higher SPF options.

Q4: How does Rysun verify the SPF rating?
A: Our Research Institute, supported by 20 leading scientific researchers, uses advanced testing protocols and up to 50 inspection procedures per product to verify that our formulations meet international safety and efficacy standards.