Poshe Nail Treatments are available online with 4 DBP, Toluene and Formaldehyde Free guaranteed nail care products to browse through. Poshé uses elements found naturally within the nail plate to nourish and condition, without the use of dehydration techniques. The results? strong, long, natural nails that resist breakage. They use a logical approach to creating strong, flexible nails based on the science of the natural nail.