Definition:
Skin phototype (SPT) is a classification system based on a person's sensitivity to sunlight. People with skin types I and II are at the highest risk for photoaging effects including wrinkles and skin cancer. However, sun effects including wrinkles and skin cancer can occur in any skin type.
- SPT I - Always burns, never tans
- SPT II - Burns easily, tans minimally
- SPT III - Burns moderately, tans gradually to light brown
- SPT IV - Burns minimally, always tans well to moderately brown
- SPT V - Rarely burns, tans profusely to dark
- SPT VI - Never burns, deeply pigmented
