Have you seen something like PA++++ on a sunscreen label and wondered what it means? If so, you’re not alone. Many people often wonder what PA stands for and why it matters. This blog post explains what PA means and why it matters when choosing sunscreen.
What is the PA Index?
PA index measures the sunscreen’s ability to block UVA rays. The PA index in sunscreen stands for Protection Grade of UVA. Experts calculate PFA based on the minimum UVA dose to produce melasma within 2 to 4 hours of exposure to the sun. They then convert PFA (Protection Factor of UVA) into PA.
How Many Levels of PA in Sunscreen?
The current market has sunscreens with a long-lasting filter index for UVA on the skin. They include 4 to 8 hours for PA++, 8 to 12 hours for PA+++, and 16 hours for PA++++. Mostly, sunscreen packaging has a poor representation of the PA index that uses the “+” sign. It divides the PA index into these four levels:
- PA+
- PA++
- PA+++
- PA++++
This sign is invisible in some sunscreen. Instead of the PA index symbol, some brands use UVA—UVB, UVA2, or UVA/UVB. Also, some countries and brands use specific symbols. For instance, SPF 60-12 could mean SPF 60 and PA+++. Additionally, sunscreens from some countries may not provide a PA rating on their product packaging. Instead, they use words like “Full Spectrum” or Broad Spectrum,” meaning their products limit the adverse effects of UVA and UVB rays.
In the world of sunscreens, symbols silently convey protection levels – from PA+ to PA++++ or alternative labels like UVA—UVB. Some, like SPF 60-12, hint at a PA+++ alliance.
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Meaning of PA
Japan established the PA sunscreen rating system to inform consumers about the protection level of the products on the market. The pluses that follow PA show the available protection hierarchy. A sunscreen with more plus signs provides higher protection. Here’s the meaning of PA depending on the number of pluses:
- PA+: Protects the skin against some UVA
- PA++: It offers moderate protection against UVA
- PA+++: It protects the user against high UVA
- PA++++: It protects you against extremely high UVA
PA ratings correlate with Persistent Pigment Darkening or the duration the sun’s rays take to tan the skin. For instance, if sunscreen has a PPD of 2, it takes twice as long for the skin to tan when you use the product versus the duration it would take without using it.
How to Choose a Sunscreen with a Good PA Index
A sunscreen with a higher PA index has a higher sun protection ability. Hence, it will protect your skin against the adverse effects of UVA rays better. Therefore, when choosing a sunscreen with a good PA index for wearing when venturing outdoors, buy one with PA++ or PA+++. It will protect your skin better and longer.
However, considering SPF is also crucial. A product with a high PA rating protects your skin against UVA rays, while one with a high SPF protects from UVB rays. Moreover, consider the activities you intend to engage in while outdoors and your skin types. For instance, waterproof sunscreen is ideal if you plan to go swimming. Also, sunscreen for sensitive skin is suitable for people with sensitive skin.
Choose a sunscreen with a higher PA index (PA++ or PA+++) for superior UVA protection during outdoor ventures. Factor in SPF for UVB defense.
Read More: Different Types of Sunscreen : Find Your Perfect Match
Conclusion
Protecting the skin is vital to maintaining radiance and health. Sunscreen is crucial to your skincare routine because it protects the skin against the negative effects of ultraviolet rays. Understanding the PA index rating can help you choose a product that protects your skin against UVA rays, which accelerate aging and cause long-term skin damage. The plus signs that follow PA indicate the protection level a product provides. Hence, sunscreen with more “+” signs provides a higher UVA protection level. Sunscreens with a PA++++ rating offer the highest UVA protection level.
