Microneedling can work when the right device is used correctly by an experienced professional. It is usually done to improve the skin’s appearance and may also help certain topical active ingredients penetrate more easily.
Microneedling is most often used to treat fine lines, enlarged pores, scars, wrinkles, stretch marks, hair loss, and changes in skin pigmentation. It is believed to work by creating tiny injuries in the skin that may stimulate skin repair along with collagen and elastin production. However, more studies are still needed to confirm how effective it is.
Medical microneedling is usually done with a sterilized dermaroller that has needles capable of reaching deeper layers of the skin, which makes it different from the devices commonly sold for home use. For microneedling to really work and be done safely, results depend on proper technique, hygiene, and the person’s skin condition.
Microneedling should be avoided in people who have: active acne breakouts (especially inflamed lesions), skin infections or warts in the treatment area, inflammatory skin conditions such as atopic dermatitis or psoriasis, a history of keloid formation, or a weakened immune system.
Using a dermaroller at home is rarely recommended because of the risk of inflammation, infection, and allergic reactions, especially when it is used incorrectly or in cases where it is not advised.