RefectoCil Cream Hair Dye (PURE BLACK) .5oz by RefectoCil. $14.50. Within ten minutes (development period) Refectocil produces permanent coverage and even coloration which lasts several weeks. The vivid coloration is light and water resistant. A complete line of tinting accessories renders the application of Refectocil professional, simple and very profitable. Refectocil is the perfect choice for dyeing beards, sideburns and even intimate hair!