Unlike most laser treatments, Scarlet SRF is safe and works on all skin types: I, II, III, IV, V, and VI. (At Flawless we perform a test patch on Fitzpatrick skin types V & VI two weeks before Scarlet treatment to ensure safety.) Scarlet SRF coagulates total dermal layers to rejuvenate total skin without any pigmentation. Scarlet SRF selectively heats total dermal layers to rejuvenate skin without any risk of epidermal pigmentation changes.