Skin biopsy techniques are essential tools in dermatology and cosmetology for diagnosing various skin conditions, including cancers, infections, and inflammatory disorders. Common methods include punch biopsy, where a circular tool removes a small cylindrical section of skin; excisional biopsy, which involves cutting out an entire lesion; and shave biopsy, where a thin slice of skin is taken from the surface. Each technique serves specific purposes based on the suspected diagnosis and the lesion's characteristics. Proper technique and post-procedure care are vital to minimize complications, ensure accurate diagnosis, and promote healing. Additionally, advancements in techniques and technologies continue to enhance the precision and efficacy of skin biopsies, contributing to improved patient outcomes in dermatological and cosmetic treatments.