The Beautimate Adjustable Hydra Stamp combines manual microneedling and serum application in one tool. A built-in serum chamber dispenses your serum through the stamp head as you work, so you can stamp and apply a lightweight, water-based serum in the same step. The stamp features 24 stainless steel needles, an adjustable depth range from 0.25 to 1.5 mm and a refillable 10 mL glass serum chamber. For at-home face and scalp use, stay at 0.5 mm or below. For face routines, pair it with HYAH Serum, our lightweight, water-based serum made with 2% sodium hyaluronate. Thick formulas and oils should not be placed in the chamber because they may not dispense properly. Want to use a thicker scalp oil such as Rosemary Hair Serum? Apply it directly to the scalp after stamping instead of filling the chamber. If you prefer to keep microneedling and serum application completely separate, our Adjustable Derma Stamp may be a better fit.