spf
Lotion bottle number
SPF stands for sun protection factor, a measure of how much UV radiation is blocked by sunscreen.
The number indicates how much longer you can stay in the sun without burning compared to unprotected skin: SPF 30 blocks about 97% of UVB rays.
Higher numbers offer marginally more protection but no sunscreen blocks everything.
In computing, SPF (Sender Policy Framework) is an email authentication method.
Long-wave ultraviolet
- UVBMedium-wave ultraviolet light
- ultravioletWavelengths shorter than violet
- radiationEnergy propagation through space
- broad-spectrumEffective across many varieties
wavelength · rays · exposure · photons · spectrum · absorption · blocking · filtering
Contributor to result
broad-spectrum · water-resistant · reapplication · coverage · duration · efficacy · labeling · recommended
Sandy waterside margin
- poolCollective fund or basin
- hikingRecreational trail walking
- skiingSnow sport on runners
- gardeningTending plants recreationally
sports · tropical · summer · midday · shade · hat · sunglasses · coverup
UV-induced skin inflammation
- tanningCuring hides or bronzing
- photoagingUV-caused skin deterioration
- melaninNatural coloring compound
- pigmentationNatural tissue coloring
wrinkles · redness · peeling · blistering · freckling · spots · complexion · sensitivity
UV-protective skin cream
- lotionLiquid skin moisturizer
- creamRich milk fat
- sprayDispersed liquid droplets
- stickThin piece of wood
gel · moisturizer · zinc · titanium · oxybenzone · mineral · chemical · reef-safe
Aggressive pigment-cell cancer
- dermatologistDoctor treating skin disorders
- preventionStopping something before occurring
- protectionGuarding against harm
- carcinogenCancer-promoting agent
UVA
Long-wave ultraviolet
- UVBMedium-wave ultraviolet light
- ultravioletWavelengths shorter than violet
- radiationEnergy propagation through space
broad-spectrum · wavelength · rays · exposure · photons · spectrum · absorption · blocking · filtering · penetration
factor
Contributor to result
100 · broad-spectrum · water-resistant · reapplication · coverage · duration · efficacy · labeling · recommended · daily
beach
Sandy waterside margin
gardening · sports · tropical · summer · midday · shade · hat · sunglasses · coverup · umbrella
sunburn
UV-induced skin inflammation
- tanningCuring hides or bronzing
- photoagingUV-caused skin deterioration
- melaninNatural coloring compound
pigmentation · wrinkles · redness · peeling · blistering · freckling · spots · complexion · sensitivity · photosensitivity
sunblock
UV-protective skin cream
stick · gel · moisturizer · zinc · titanium · oxybenzone · mineral · chemical · reef-safe · tinted
melanoma
Aggressive pigment-cell cancer
- dermatologistDoctor treating skin disorders
- preventionStopping something before occurring
- protectionGuarding against harm
carcinogen · keratosis · moles · screening · biopsy
spftanning oil
Skin oil for darkening
tanning lotion · sun exposure · tanning bed · sunbathing · UV exposure
spfsunburn
UV-induced skin inflammation
sun damage · photoaging · skin cancer · melanoma · radiation damage
- SPF 30Moderate solar protection level
- spf rating
- SPF 15Mild ultraviolet screening rating
- SPF 50High ultraviolet protection level
- SPF lotionSkin cream blocking rays
- daily spf