Derma rolling aids product penetration into your skin and ensures your products penetrate deeply into the skin and are more effective. Regular use stimulates collagen production and can help to reduce the appearance of fine lines, wrinkles. Can aid in the reduction of pigmentation when teamed with the correct home care products. We recommend the roller is used at night with a serum, if you are unsure which serum to choose feel free to message us for advice. There is a demo on our Instgram page under hilights Purejoy Home Facial kit.