Table 1 Grading criteria for skin irritation experiments
Erythema score | Expression | Edema scores | Expression |
|---|---|---|---|
0 | Non | 0 | Non |
1 | Slight | 1 | Slight |
2 | Obvious | 2 | Obvious |
3 | Severe | 3 | Severe edema (the skin bulges about 1 mm) |
4 | Purplish red spot with eschar | 4 | Severe edema (skin swelling over 1mm with enlargement) |