1, grinding method
This is a mechanical operation, and it is impossible to accurately separate the epidermis from the dermis. The biggest drawback is the different shades. Especially the eyelid surgery is more difficult. Although some doctors think the effect is good, doctors with experience in this field are gradually giving up this method. If this method is used to treat stable acne scars, it must be the first choice.
2. Traditional cold therapy
It needs phased treatment, and the course of treatment is long. Recently, facial deformity has increased the mental burden of patients. Due to the point treatment, the depth is difficult to grasp, and there have been reports of excessive freezing to form scars or irreversible spot-like white spots.
3. Skin changing method
Popular methods in beauty salons. Essentially, it is the exfoliation of stratum corneum (epidermis 1/6 layer, the shallowest layer), so it has no lasting effect on freckles in the deep epidermis. Despite its popularity. But the operators have a deep understanding; It is necessary to use "special ointment" for a long time after operation to maintain the effect, otherwise there will be unpleasant disputes between beauticians and beauty seekers.
4. Chemical methods
Skilled doctors can also get good results by using this traditional method to treat freckles. The disadvantage is that the concentration of chemical peeling agent has been fixed, but the skin thickness and personal reaction degree are uncertain, so reports of hypertrophic scars occur from time to time.