FAQ About Sunscreen

SPF stands for "Sun Protection Factor." It is a numerical rating that indicates how effectively a sunscreen can protect the skin from the sun's UVB rays, which are responsible for causing sunburn. The SPF value represents the level of protection the sunscreen provides against UVB radiation. Here's what the SPF number means:

• SPF Number: The SPF number indicates the multiple of time you can stay in the sun without getting sunburned compared to not wearing sunscreen. For example, if you use an SPF 30 sunscreen, it means you can stay in the sun 30 times longer without getting sunburned compared to not using any sunscreen.
• Percentage of UVB Blocked: The SPF number correlates to the percentage of UVB rays blocked by the sunscreen. An SPF 15 sunscreen blocks about 93% of UVB rays, while an SPF 30 blocks about 97%, and an SPF 50 blocks about 98%.
• Duration of Protection: It's essential to understand that the duration of protection is not directly proportional to the SPF number. For instance, an SPF 30 sunscreen does not provide twice the protection of an SPF 15 sunscreen. The difference in protection time is marginal. An SPF 15 sunscreen may protect for about two hours, while an SPF 30 sunscreen may provide around four hours of protection. After this time, it is essential to reapply the sunscreen.

Choosing the Right SPF Level:

The ideal SPF level for you depends on various factors, including your skin type, the intensity of the sun's rays, and your intended sun exposure:

• Skin Type: Individuals with fair or sensitive skin tend to burn more easily and may benefit from higher SPF levels, such as SPF 30 or above.
• Sun Exposure: If you plan to spend extended periods outdoors or participate in activities with high sun exposure, consider using higher SPF sunscreens.
• Location and Time of Day: If you are in a location with intense sunlight or during peak sun hours (usually between 10 am and 4 pm), higher SPF sunscreens may be more appropriate.
• Personal Preference: Some people prefer higher SPF levels for added protection and peace of mind.