Trichologist Approved Tool for Thicker Looking Hair A trichologist-designed dermaroller with 540 microneedles (.25mm) that invigorates the scalp while improving product absorption for stronger, thicker, healthier-looking hair. + Increases the look + feel of hair density + Activates the scalp to support hair follicle health + Boosts topical product absorption Scalp Science Adequate blood flow and circulation are essential for overall scalp health and the promotion of healthy hair growth. Scalp dermarollers employ needles to create micro-channels on the scalp, stimulating blood flow and collagen production while enhancing the absorption of topical products. Our Scalp Dermaroller features a unique design with 540 high-strength medical-grade stainless steel needles. These needles effectively activate the scalp to promote hair follicle health, stimulate blood flow, and increase microcirculation.