Here we have an overview of which color to use by skin problem.
Red Light: Promotes collagen regeneration, reduces wrinkles, enhances skin elasticity and firmness.
Infra Light: Improves blood circulation, repairs skin wounds, reduces inflammation, and alleviates pain.
Blue Light: Fights acne bacteria, eliminates acne, eczema, rosacea, and soothes skin inflammation.
Green Light: Reduces skin pigment deposits, fades sunspots, and diminishes scars.
Yellow Light: Repairs skin, reduces redness, and alleviates skin irritation.
Purple Light: Minimizes pores and promotes skin tightening.
Cyan Light: Reduces sebum secretion.