A219 P11

1. Organic UV filter protect us from UVR by __________ of UVR.

(select all that applies)

• absorption

• scattering

• reflection

• increase path length

Inorganic UV filter protect us from UVR by __________ of UVR.

• absorption

• scattering

• reflection

• all of the above

Which group of UV filters tends to break down and lose their UV protective function upon exposure to UVR?

• Butyl methoxydibenzyl methane (BMDM), Ethylhexyl Methoxycinnamate (EHMC)

• Benzophenone-3 (BP3), octocrylene

Which of the following UV filters also serves as photostabilizer?

• Butyl methoxydibenzyl methane (BMDM)

• Benzophenone-3 (BP3)

• Ethylhexyl Methoxycinnamate (EHMC)

• octocrylene

Whitening effect of sunscreen using inorganic UV filter can be reduced by ________________ particle size and/or refractive index of the UV filter.

• decreasing

• increasing