540 titanium micro-needles, 0.5mm in length, stimulate the stratum corneum, promoting activation and the production of beautiful skin components. Deeper stimulation is possible depending on the needle length, but the effects vary depending on age and individual differences, and some people may not experience much effect even with deeper penetration. Rather, continuously stimulating the shallow surface layers with 0.25mm or 0.5mm needles tends to be more effective. For acne, needles of 1mm or longer are effective. After removing dirt from the skin surface, apply the serum and then roll several times. Serums containing hyaluronic acid are recommended. The fine needles create holes, allowing the lotion to penetrate more deeply. Use it about once or twice a week. After use, wash with hot or lukewarm water and keep the needle roller part clean. For hygiene reasons, it is recommended to replace the roller with a new one every three months. If you feel any pain, stop using it immediately. It will stress the skin and have the opposite effect. The nearest post office is closed on Saturdays, Sundays, and holidays, so shipping will be done after the holidays. We eliminate anything that could transfer odors or cause allergies, such as tobacco and pets. We take every precaution with our products, but if you find any damage or discrepancies, please contact us as soon as possible. We will either send a replacement or cancel the transaction. The 0.5mm derma roller with 540 needles is ideal for anti-aging. - Model Name: Derma Roller 0.5mm - Accessories: Hard case included - Roller Color: Pink - Number of Needles: 540 - Purpose: Anti-aging