Happy Head於網站上也有一篇專門說明微針(Dermaroller)的文章 其中提到了微針相關的好處與建議,但特別針對長度有一段不同於許多人的看法: Which Dermaroller Should I Buy? According to Dr. Ben Behnam, board-certified dermatologist, hair specialist and co-owner of Los Angeles-based Dermatology and Hair Restoration, the key to selecting a dermaroller is to get the correct needle size. “When dermarolling, you don’t have to go very deep to get results,” said Behnam. “I recommend just 0.25, which is very shallow. Many people read online that a 1.5 depth is recommended, but in my opinion, that’s too deep. Nobody needs a roller that strong. Rollers with needles that are too long hurt, and they can damage the hair follicle. You certainly don’t want to damage areas where your hair is thinning or balding.” 簡單來說是談到如何選擇微針時,據董事會認證的皮膚科醫生、頭髮專家和洛杉磯皮膚病學和頭髮修復的一位Ben Behnam 博士的說法,選擇微針的關鍵是正確的針頭尺寸。 在滾動時,無需深入即可獲得效果,他還建議僅使用 0.25mm長度的微針,許多人在網上看到建議使用 1.5mm,在他看來太深了, 太長的針頭會受傷,並且會損壞毛囊。