Important Hair Type Notice ? This hair end split end remover is ONLY designed for straight, fine, thin, smooth, dry hair. ? NOT suitable for curly, coily, thick, wavy, or African American hair. ? Please confirm your hair type before purchase to avoid unsuitable use. Correct Operation Instructions (Must Follow) ? Hair must be 100% dry, straight, and smooth ? Use very small, thin strands each time ? Glide slowly; do not pull or press hard ? This product only trims split ends, not large sections of hair Why Pulling May Occur Pulling or tugging mainly happens when: ? Hair is thick, curly, or not straightened ? Taking too much hair at once ? Moving too quickly during useThis is normal for this type of hair end trimming tool. Product Structure & Design ? Quiet and gentle working mode. ? The collection box holds tiny split ends, you may not see large clumps. ? The opaque protective cover is for safe use, not a product defect. USB Rechargeable & Portable ? Built-in rechargeable battery, long lasting for daily use. ? Compact and lightweight design for home or travel. ? Please fully charge before first use.