Collagen (along with soft keratin) is responsible for skin strength and elasticity, and its degradation leads to wrinkles that accompany aging. The new collagen tightens and tones, reducing the appearance of wrinkles. So more collagen - younger look. Since laser penetrates deeper that creams and serums its effect is more dramatic and lasts longer, but the greatest benefit is that your body and skin use the resources from within, making injections of toxins unnecessary. So not only it is effective, so it is healthy.