1, laser (laser, lattice,,,), principle: destroy acne pit tissue, proliferation and repair; 2, grinding (mechanical, microcrystalline), principle: grinding off some good skin around the acne pit to reduce the height difference; 3. Acupuncture (micro-needle, acupuncture needle,,,), principle: similar to1; 4. Chemical corrosive potions and ointments, principle: similar to1; 5, fruit acid (and 4 should be counted together), principle: similar to1; 6, filling (collagen,,,), principle: foreign body filling, invalid or short-term effect. There may be some, but as far as I know, the effect is not ideal. Why? Because they look various, there are basically three kinds: 1, which destroys the proliferation and repair of skin; 2. Grind the skin around pockmarked; 3. Foreign body filling will be absorbed. These are all expedient measures. I think it's all in the wrong direction If the problem is solved in the wrong direction, will there be a good result? So what method can cure acne pits? If you want to cure acne pits, you must look at the essence. Pocket is a kind of concave scar with epidermal defect, which is partly caused by the shedding of necrotic cells for various reasons. However, the cells in the hemp seed are alive, but in a dormant state. We have found a way to activate it without damaging the skin. As long as the epidermis is smeared, the cells can re-divide, repair the pockmark in memory, and completely cure the pockmark.