Table 2. Adapted Draize scale.

Score	Grade	Edema	Erythema
0	None	No swelling	Normal color
1	Minimal	Slight swelling (barely perceptible)	Light pink (barely perceptible)
2	Mild	Defined swelling (distinct)	Bright pink/pale red
3	Moderate	Defined swelling (raised ≤ 1 mm)	Bright red
4	severe	Pronounced swelling (> 1 mm)	Dark red