... 9.A wide range of application for clinics or beauty salons10.One device can extend to tens of ... collagen protein,intensifies skin elasticity and smoothes fine wrinkles.Blue light:Bacteria killing,skin cleaning,cell activation,injury ... absorption, so get the beat beauty effect.Technical Parameters: Red light wavelengths600nm+/-10nm Blue light wavelengths470nm+/-10nm Yellow light wavelengths590nm ...