• Allergy to micro-needling materials;
• Skin diseases with active or advanced local skin, or skin diseases with isomorphic reactions, such as eczema, psoriasis vulgaris, lichen planus;
• Local various viral, bacterial and fungal infections (such as local oral herpes simplex, common wart, flat wart, folliculitis, Malassezia folliculitis, ringworm of the face, skin tuberculosis and mycobacterial infection, etc.)
• Unknown injections in the treatment area;
• Malignant tumor or skin tumor of unknown nature in the treatment area;
• Other blood system diseases such as coagulation disorders, or those with other systemic diseases that cannot tolerate micro-needling;
• Those undergoing chemotherapy/radiotherapy;
• Those with keloids or keloids;
• People with mental illness.
