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| | style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |[[SPF]] ([[Sun Protection Factor]]) | | | style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |[[SPF]] ([[Sun Protection Factor]]) |
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| *An ideal sunscreen should have the following properties: | | *An [[Idealization|ideal]] [[sunscreen]] should have the following properties: |
| **Broad-spectrum | | **[[Broad-spectrum]] |
| **Both UVA & UVB filters | | **Both [[UVA radiation|UVA]] & [[UVB radiation|UVB]] filters |
| **Atleast SPF 30 | | **Atleast SPF 30 |
| | rowspan="8" | | | | rowspan="8" | |
Revision as of 18:57, 1 August 2019
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sara Mohsin, M.D.[2]
Different sunscreen recommendations and recommendations' grading according to Canadian Task Force on Preventive Health Care (CTFPHC) GRADE System
Sunscreen property
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Recommendation
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Grade of Recommendations
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SPF (Sun Protection Factor)
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Water resistance
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- Sunscreen providing water-resistance for 40-80 minutes must be worn in following conditions:
- Water immersion
- Excessive sweating
- Contact with sand
- Physical contact causing increased skin friction
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Organic vs inorganic sunscreens
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- Whether the components of sunscreen are organic or inorganic, recommended sunscreen must be broad spectrum with both UVA & UVB filters
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Lip protection
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- Whole lip should be generously covered by high-SPF (>/= 30) and reapplication of lip sunscreen
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Sunscreen application
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- Sunscreen is recommended to be applied according to following guidelines:
- Should be applied liberally (approximately 45 ml) to all the exposed areas
- Strong reapplication within a period of 8 hours is mandatory only after activities that may remove the sunscreen layer such as sweating, swimming, or friction
- Should be applied before any sun exposure and at least 20 minutes before the water activities
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Patient education on sunscreen
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- Patients should be educated about the meaning of SPF and its effectivesness
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Sunscreen safety
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- Sunscreens have a favorable risk-benefit profile, hence, are considered to be safe overall
- There is still a risk of following few complications due to sunscreen application in some people:
- Photoallergy (most common, but quite rare)
- Reproductive toxicity
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Sunscreen benefits
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- Prevents photoaging
- Prevents melanoma and non–melanoma skin cancer
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Sunscreen vehicle
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- Highest SPF and water resistance properties of sunscreen can be obtained by using a water-in-oil emulsion formulation for sunscreens
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Expiry date
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- Avoid using sunscreens past the manufacturer-specified expiry date/recommended period after opening
- Sunscreens should be stored at normal room temperature in order to ensure their proper stability
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References