Red Light Mode (IRE) (Exfoliates & Brightens), can help to make skin become even and care the dark spots. *Recommended for dull and uneven skin. Blue Light Mode (EP) (Enhances Absorption)can help to absorb various skin care products directly into the skin layer, making it easy for your skin to hold products effectively. *Recommend to use with our 3 functional ampoules. Violet Light Mode(MC) (Improves Skin Elasticity)Can help improve skin firmness and skin tightening! *Recommended for those who have sagging and aged skin.