PA Rating on Sunscreen: PA+ to PA++++ Explained

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Updated November 1, 2026

Beach on a sunny day — Photo: Mike Baird from Morro Bay, USA, CC BY 2.0

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Quick answer: The PA rating measures UVA protection. It runs from PA+ (some) to PA++++ (extremely high), based on a test called persistent pigment darkening (PPD). SPF measures UVB protection, so look at both numbers.

UVA rays penetrate deeper into the skin and contribute to skin aging and skin cancer, so UVA protection matters even when you don't burn.

The four grades

Grade	UVA protection	PPD value
PA+	Some	2 to under 4
PA++	Moderate	4 to under 8
PA+++	High	8 to under 16
PA++++	Extremely high	16 or more

PA vs. SPF vs. broad spectrum

	Measures	Used in
SPF	UVB	Worldwide
PA	UVA (PPD test)	Japan, Korea and other Asian markets
Broad spectrum	UVA and UVB (critical wavelength test)	U.S.
UVA in a circle	UVA protection at least one-third of the SPF	EU

Which PA should you choose?

For daily wear, PA+++ or higher is a common choice. For long outdoor days, PA++++ with SPF 50 offers the most protection, combined with shade and clothing.

Shop by rating

PA++++ sunscreen
Highest UVA grade.
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This guide is general information, not medical advice. If you have a skin condition, sensitive skin or a reaction to a product, talk to a board-certified dermatologist.

Frequently asked questions

Is PA++++ better than SPF 50?

They measure different things. SPF is UVB protection; PA is UVA. A good sunscreen has strong numbers for both.