Selection of Fair-skin Subjects
Skin Type and Sunburn and Tanning History (Based on first 30 to 45 minutes sun exposure after a winter season of no sun exposure.)
I-Always burns easily; never tans (sensitive).
II-Always burns easily; tans minimally (sensitive).
III-Burns moderately; tans gradually (light brown) (normal).
IV-Burns minimally; always tans well (moderate brown) (normal).
V-Rarely burns; tans profusely (dark brown) (insensitive).
VI-Never burns; deeply pigmented (insensitive).
21 C.F.R. §352.72