what does spf stand for

SPF stands for Sun Protection Factor.

Understanding SPF

SPF stands for Sun Protection Factor.

It measures the level of protection against UVB rays.

How SPF Works

SPF indicates how long you can stay in the sun without burning.

For example, SPF 30 means 30 times longer protection.

Choosing the Right SPF

Select SPF based on skin type and sun exposure.

Higher SPF offers more protection but not linear.

• Fair skin: SPF 30+
• Medium skin: SPF 15-30
• Dark skin: SPF 15

Reapplication is Key

Reapply sunscreen every two hours.

More frequent application is needed after swimming.

Limitations of SPF

SPF does not measure UVA protection.

Broad-spectrum products protect against both UVB and UVA.