Frequency of Recommended use: 0.25 mm Microneedle(every other day) Red Blood/Thin corneum Normal skin Introduction maintenance 0.5 mm Microneedle(1 to 3 times a week) Mild acne marks Fine lines/Moisturizing/Big pores Pigmentation 1.0 mm microneedle(every 7 to 14 days) Acne pit scars Wrinkles/Frowns lines Sagging skin 1.5 mm microneedle(every 2~4 weeks) Deep pits/Scars Stretch marks/Obesity lines Hair growth