Anatomy | Physiology | Body facts on Instagram: "How a Derma Roller Works 🧬✨ A derma roller is a skincare tool covered with hundreds of tiny medical-grade needles. When it’s gently rolled over the skin, it creates microscopic punctures that are invisible to the naked eye. These tiny micro-injuries don’t damage the skin—instead, they activate the body’s natural healing response. Here’s what happens step by step: 🔹 Collagen & Elastin Boost The skin treats these micro-channels as wounds and start