Hair Pearl Tint is an exceptional product that's formulated for long lasting results and is one of the most popular hair tinting products on the market today. For professional use only.<br> <br> For maximum shelf life, store in an air-conditioned area. Excessive heat or freezing will shorten the shelf life of the product. Due to oxidation once the product is opened, the manufacturer recommends replacing tint and developer within 3 months.<br> <br>Hairpearl Tint is not tested on animals.