The BY MIA Hair Building Keratin Fibres are an exceptional hair product designed to combat thinning hair in a few easy steps. This 21g pack is specifically formulated with rich, dark brown hair-building keratin fibers, making it an ideal solution for those with similar hair types. The prominent packaging ensures that you always have what you need on hand, providing quick access to the powerful ingredients that work to stimulate hair growth and promote healthy, lustrous locks. Simply follow the accompanying care and use instructions to achieve the results you've been waiting for.