Answer: SPF
SPF is a crossword puzzle answer that we have spotted 165 times.
    - Tanning lotion letters
 
    - Tanning lotion abbr.
 
    - Sunscreen abbr.
 
    - Sunblock letters
 
    - Coppertone no.
 
    - No. of beachgoers?
 
    - Letters on some lotions
 
    - Lotion abbr.
 
    - Lotion letters
 
    - Suntan lotion letters
 
    - It prevents burn out: Abbr.
 
    - Beach lotion letters
 
    - Coppertone rating: Abbr.
 
    - Beach bottle letters
 
    - Hawaiian Tropic no.
 
    - Number on a bottle at the beach
 
    - Letters on a Coppertone bottle
 
    - Coppertone rating letters
 
    - Abbr. on a lotion bottle
 
    - Tanning lotion initials
 
    - UV ray-blocking stat
 
    - Coppertone tube abbr.
 
    - Coppertone bottle abbr.
 
    - Tanning lotion tube letters
 
    - Sunblock abbr.
 
    - Cover letters?
 
    - UV-blocking stat
 
    - Block letters?
 
    - Coppertone abbr.
 
    - Burn-prevention rating, briefly
 
    - Baking letters?
 
    - UV-blocker rating syst.
 
    - No. when you're 36-Down
 
    - Tanning-lotion letters
 
    - Lotion no.
 
    - Beach-bottle letters
 
    - Sunscreen letters
 
    - Tanning-lotion no.
 
    - Sunscreen-tube letters
 
    - Sunblock-bottle initials
 
    - Meas. of effectiveness against UV rays
 
    - Coppertone letters
 
    - Beach-lotion no.
 
    - Beach cream fig
 
    - Letters on a sunscreen bottle
 
    - Letters of concern to the pale
 
    - Tanning lotion no.
 
    - Letters at the beach
 
    - No. on a bottle, maybe
 
    - Coppertone rating (abbr.)
 
    - 15, 30, or 45, usually (abbr.)
 
    - Beach safety meas.
 
    - Letters on the beach
 
    - Basker's abbr.
 
    - Suntan lotion abbr.
 
    - Sunscreen bottle abbr.
 
    - Abbr. on a sunscreen bottle
 
    - Ray blockage no.
 
    - Ray-blocking letters
 
    - Beach lotion abbr.
 
    - Coppertone stat
 
    - Sunblock stat
 
    - Burn prevention meas.
 
    - UV blockage number
 
    - No. at the beach
 
    - Tanning lotion bottle abbr.
 
    - Bain de Soleil abbr.
 
    - Basker's letters
 
    - Tanning lotion stat
 
    - Lotion inits.
 
    - Letters on a beach bottle
 
    - Hawaiian Tropic stat
 
    - Meas. for redness avoidance
 
    - Abbr. on a beach bottle
 
    - Ltrs. on sunblock solution
 
    - Beach tube letters
 
    - Letters on Ocean Potion lotion
 
    - UV blockage stat
 
    - Burn prevention stat
 
    - Block number?: Abbr.
 
    - Inits. on a "Baywatch" prop
 
    - No. often between 15 and 50
 
    - Tanning lotion spec
 
    - Letters on some ocean lotions
 
    - 50+, e.g., on a L'Oréal tube: Abbr.
 
    - Hawaiian Tropic lotion letters
 
    - Meas. of blocking
 
    - UV-protection measure
 
    - Sunscreen letters?
 
    - UV blockage no.
 
    - Lifeguard's concern, in brief
 
    - Letters on some lotion
 
    - Coppertone's 30, e.g.
 
    - Abbr. in a beach bag
 
    - Beach letters
 
    - Banana Boat initials
 
    - Letters on a bottle at the beach
 
    - Letters by the shore
 
    - UV blocker's rating
 
    - Sunscreen stat.
 
    - Letters before a number on a beach bottle
 
    - Sun-blocking letters
 
    - Letters on tanning lotion
 
    - Consideration for avoiding burns, for short
 
    - Rating on a Coppertone bottle, for short
 
    - 50 is a very high one, in brief
 
    - UV-related rating
 
    - Letters on a lotion bottle
 
    - Sunburn protection initials
 
    - Cover letters for certain applications?
 
    - Tanning fig.
 
    - Letters on a Sun Bum container
 
    - Blockage letters
 
    - UV-blocking no.
 
    - Letters on sunscreen
 
    - Beach bottle inits.
 
    - Sunblock stat.
 
    - UV-blocking rating
 
    - UV-blocking initials
 
    - 30 or 50, often
 
    - Banana Boat letters
 
    - Lotion bottle abbr.
 
    - 50 is a high one: Abbr.
 
    - Beach meas.
 
    - Coppertone tube fig.
 
    - UV-blocking letters
 
    - Shielding figure
 
    - Tanning letters
 
    - Lip balm stat, perhaps
 
    - Letters on some foundations
 
    - Stat on some foundations
 
    - Beach lotion initials
 
    - Tanning lotion fig.
 
    - UV-shielding initials
 
    - Sunscreen number
 
    - Stat on some face lotions
 
    - Letters on a bottle of tanning lotion
 
    - It guards against UVB
 
    - Beach lotion meas.
 
    - UV blocking measure
 
    - Screen rating, in brief?
 
    - Letters on sunscreen bottles
 
    - Letters on an Unsun bottle
 
    - Burn notice?
 
    - Banana Boat no.
 
    - Abbr. in skin care
 
    - Letters on a foundation?
 
    - Blocking stat
 
    - Initialism for certain applications
 
    - Coverage plan abbr.
 
    - Letters on some skin care products
 
    - Sunblock initials
 
    - Spec on some moisturizers
 
    - Burn letters?
 
    - Letters of coverage
 
    - Letters on some lotion bottles
 
    - Letters for a seaside vacation
 
    - Sunscreen inits.
 
    - Beach bottle no.
 
    - UV-filtering measurement
 
    - Exposure spec.
 
    - Letters on some makeup bottles
 
    - Letters on some protective lip balm
 
    - Daytime coverage letters
 
    - Letters on some moisturizer bottles