PDT-3H Blue 410nm 
Output of high purity violet blue light matches the peaks optical absorption of acne aminolevulinic acid (ALA),  metabolites inside the porphyrin, Propionibacterium acnes metabolites inside the porphyrin stimulated by the withdrawal-induced chemical processes produce large singlet oxygen activity and generate a high oxidative environment to propionibacterium acnes, which accordingly leads to the death of bacteria on the skin acne cleared.
PDT-3H Yellow 580nm
Output of high- purity yellow light matches the peak optical absorption with vascular and improves microcirculation safety and effectively under none-thermal effect, regulating cells activity, effectively improve the skin problems by the years.
PDT-3H Red 630nm
Output of high- purity red light effectively strengthens the collagen of the skin cells activity , lessens pore, softens  skin wrinkles and increases skin elasticity. Removes the dermal patches, freckles and chloasma. Treat cystic acne effectively with photosensitizer, actinic keratosis, Bowen's disease, superficial basal cell carcinoma and Mycosis fungoides other.
Application
Lessens skin coarseness-contraction pore 
Minimizes fine lines and wrinkles 
Tightening skin flexibility 
Reduce Gongxiesi, pimples and Redness 
Removes the dermal patches, freckles, chloasma