Hydra needle is a suitable method that helps the solution take effect inside the skin. It is a microneedle device for delivering cosmetic and hair growth solutions into the dermis by lightly tapping it on your skin, especially around the eyes—20ea of microneedles with the same hair thickness form fine holes in the skin without pain. Also, a Special spiral system is designed on each of those microneedles through which the solution flows down and can be transferred directly and effectively into the dermis.