[📖【 STEP BY STEP GUIDE 】At the bottom of the page in the product description. ✨【 HAMINOS DERMA ROLLER】The facial roller is designed to stimulate receptors in the skin and apply skin care ingredients instantly thanks to its reservoir which allows them to be better absorbed into the skin. ⭐️【 INNOVATIVE DESIGN 】 The derma roller includes a reservoir that allows you to instantly apply the serum you apply. 💆\u200d♀️【EASY TO USE】To use the derma roller apply an anesthetic cream beforehand and apply hyaluronic acid vitamin C minoxidil retinol peptides etc. to enhance the effects. Cover to seal and apply aloe vera to soothe the skin. 🧴【 GENTLE ON THE SKIN 】 Our manual derma roller provides a softer and more controllable treatment giving you a professional result without the annoying pain that an electric one can cause. ⌛️【 FREQUENCY OF USE 】 Use the hair derma roller 2 or 3 times a week for best results. To keep it clean disinfect the device before and after each use with alcohol. 🧑\u200d💻【After-sales customer service ⭐️⭐️⭐️⭐️⭐️ 】 If the product has quality problems we will solve it within 24 hours. We like to receive constructive criticism to improve our product.]