What is a double skin base and hair line in a human hair topper A double skin base is a type of hair topper base that consists of two layers of material, typically a thin layer of lace or silk on top and a thicker layer of polyurethane on the bottom. The purpose of this design is to provide a more durable and secure base for the hairpiece, while still maintaining a natural look and feel. The hairline refers to the area at the front of the hair topper where the hair is attached to the base. A natural-looking hairline is important for a hair topper to blend seamlessly with a person's existing hair. Some hair toppers have a pre-made hairline, while others allow for customization of the hairline through techniques such as plucking or trimming. Washing and Care Instructions for Women's Human Hair Topper Congratulations on your purchase of Women's topper 2x4 Made from 100% Indian human hair, these natural Black straight soft hair extensions are crafted with the utmost care and attention to detail. To ensure longevity and maintain the lustrous appearance of your hair extensions, it is important to follow the proper washing and care instructions. Here are some guidelines to help you keep your hair Topper looking their best: 1 ) Brushing and Detangling: Before washing your hair topper gently brush them using a wide-tooth comb or a soft bristle brush. Start from the ends and work your way up to the roots to remove any tangles or knots. Avoid using excessive force or pulling on the extensions, as this may cause damage. Washing: Fill a basin or sink with lukewarm water. Add a small amount of mild shampoo specifically formulated for human hair Topper Submerge the topper in the water and gently swirl them around. Avoid rubbing or twisting the hair as this can cause tangling. After a few minutes, rinse the topper thoroughly with clean water. Conditioning: Apply a generous amount of conditioner toppers .