The basics Betty Dain Colortrak Professional Haircoloring Mèche technology offers a lightweight yet firm material for maximum support and hold when painting on hair color. The benefits These transparent sheets allow you to closely monitor color processing and progress to achieve the exact look you want. The uses Ideal for vivid, bold fantasy hair color applications where intense color saturation is needed. The bottom line A cost-effective, waste-reducing color processing solution as sheets can be washed, dried and reused. 5" wide sheets are pre-cut for convenience and available in 12" or 16" lengths; 100 sheets per package.