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The SPF of a product allows you to determine how long you can stay out in the sun without burning.
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The SPF of a product allows you to determine how long you can stay out in the sun without burning.

User Mr Wotan
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Final answer:

The subject of this question is Health. SPF measures a product's protection from UVB rays and helps determine how long a person can stay out in the sun without burning.

Step-by-step explanation:

The subject of this question is Health. The question relates to the concept of SPF (Sun Protection Factor) in sunblock or sunscreen products.

SPF measures a product's protection from UVB rays and helps determine how long a person can stay out in the sun without burning.

It is important to note that SPF does not quantify protection from UVA radiation.

A minimum SPF factor of 30 is recommended by the American Academy of Dermatology.

User Harold Javier
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