found blue light from screens was 100–1,000 times less intense than blue light from the sun. It also failed to trigger melasma, which causes patches of skin discoloration, in patients who have the condition.
SPF testing is closely regulated by the International Organization for Standardization . All products that claim to contain an SPF undergo an identical testing regime.The lack of regulation for blue light claims makes it impossible for consumers to make informed choices about the level of protection offered and differences between products.
Given the evidence around blue light emitted by screens, it's worth applying skepticism to any claims that a product is needed to prevent damage from your computer screen or phone.
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