The 6-in-2 Derma Roller Skincare System comes with 600 titanium micro-needles and replaceable heads. Titanium is 3 to 4 times stronger than steel and prevents skin damage. The replaceable heads enhance hygiene, safety, and ensure comfortable use. Perfect for pairing with your favorite skincare products for smooth and glowing skin. Safe for home use with short needles that don't penetrate the deeper layers of the skin