What are the models of nano-microneedles and how to choose different models of nano-microneedles?

There are three series of nano-microneedles, namely 2DL, 3DL and 5DL. The difference is that the chip area of 2DL nano-microneedles is 2㎜*2㎜, and the price is relatively low, which is mainly suitable for other sensitive and small parts such as eyes and ears. The area of 3DL nano-microneedle chip is 3㎜*3㎜, and the price is relatively moderate, which is suitable for all parts of the face. The area of 5DL nano-microneedle chip is 5㎜*5㎜, and the price is relatively high. Mainly suitable for large areas, such as abdomen, back, chest, thighs and so on. And the stretch marks on the abdomen are the most commonly used. Each series of nano-microneedles has three models, namely 2DL-D (low needle of 2DL-D), 2DL-Z (middle needle of 2DL) and 2DL-G (high needle of 2DL). 3DL-D (3DL low needle), 3DL-Z (3DL middle needle), 3DL-G (3DL high needle); 5DL-D (5DL low needle), 5DL-Z (5DL middle needle), 5DL-G (5DL high needle). These different models are easy to understand, indicating that the needle height of nano-microneedles has three grades: low, medium and high. Used to choose different models according to different parts and different skin types. Choose high needle for thick skin and low needle for thin skin. However, nano-microneedles are used together with nano-microneedle transdermal enhancer, and the transdermal enhancer itself has the adjustment of needle height, ranging from 0 to 2 ㎜. Therefore, when we choose, we can only choose -Z (middle needle).