1.   No erythema effect or Previous light erythema effect disappeared

Every time increase 20~ 25% dose.

2.   Mild erythema effect

Same as the last dose or increase 10% dose,if erythema effect disappears,same as A .

3.    Asymptomatic, clear the shinning erythema

Stop treatment for one time, then with the same exposure, later every time by 10% gradually increasing dose.

4    The pain of erythema, or with edema,blister

Stop treatment, until recovery. Reduce the dose half, later every time increased by 10% dose.