Every day, patients ask me a lot of questions about scars, so I have summarized a few representative questions to answer for you. First, can I apply scar cream to flatten hyperplastic scars? Scar creams are simple and quick with certain efficacy, which are easily accepted by patients. However, scar cream should be used in the early stage of scar creation within one year, which can play a role in reducing symptoms and inhibiting scar growth; it can also be applied in combination with fractional laser, but it should be understood that scar cream does not necessarily control scar growth completely, and more effective ways, such as drug injection or surgery, are needed. And for older scars over a year old, scar creams are not very effective. Second, what causes acne marks? The pimple marks are caused by the damage to the dermis. If only the epidermis is damaged or if the pimple on the face is not infected, it will not leave pimple marks; if the pimple is infected and there are abscesses and pustules, which in turn hurt the dermis, it will leave pimple marks. There are two kinds of acne marks, black and red, and you can take some photoelectric means to get rid of them. For example, photonic laser can improve the red marks, while ultra picosecond has a very good effect on pigmentation on acne marks. Third, how often is the skin tensioner usually replaced? If there is no obvious skin irritation after the decongestant is applied, such as itching, redness, pain or rash, blisters, etc.. Then the decongestant should be kept as much as possible, and generally replaced once every three weeks or so. If the decongestant comes off or has the above mentioned discomfort then replace it promptly. Don’t panic if you have a scar problem, but find a professional doctor for diagnosis in time. At the same time, don’t be shy about treatment, try to cooperate with the doctor for treatment, establish confidence, you will be able to achieve very good treatment results.