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1MHz 3MHz 5MHz how to choose the rf frequency?

You know that we produce and sell beauty machine in china. When I sell the radio frequency machines, Some buyer will ask: “do you have a 5MHz frequency?”
At first I was confused, Why they want the 5MHz frequency? After communication they told me, they think the 5MHz frequency will have a better effect than the 1MHz frequency.


Is it the truth?

To find the answers, let us learn the principle of the radio frequency, how rf achieve skin tighten wrinkle removal.
The high-frequency radio wave penetrates to the epidermis layer, directly to the dermis, deeply heating the collagen cells, then stimulate the growth of collagen fibers, which makes a lot of new collagen to support the skin and become more compact and elasticity. To achieve the effect skin tighten lifting wrinkle removal.


So we find that the treatment area for the rf should be the dermis. We know that the epidermis layer is about 0.2mm, and the dermis is about 2mm. It's differences from area to area.


So the frequency of the rf is not the bigger the better, it should be in a reasonable range.

At the moment in the market, we have the 1MHz, 3MHz, 5MHz frequency, which will all affect at the dermis.
In fact, the 1MHz frequency wave has a longer penetration than the 5MHz, and experiments show the 1MHz frequency has big energy than the 5MHz. So usually we will use the 1Mhz frequency to do the body treatment, in which area the skin is thicker. And we will use the 3MHz or 5MHz frequency to do the face eye around treatment, in which area the skin is thinner.


So if one seller told you the 5MHz radio frequency is better and more expensive than the 1MHz radio frequency, Do not believe him.


Did you do rf treatment with a different frequency? Could you find different effect? Please show your experience with us.