Your nails are bitten, breakable or damaged? The brand Skin Nail provides you a solution thanks to its treating transparent nail polish. Skin Nail uses a natural active ingredient: the Quassia extract (a tree from South America used for a long time for its bitterness and its capacity to strengthen the nails). The Skin Nail nail polish avoids to bite your nails (thanks to its bitterness), allows to strengthen and avoid them to become breakable and striated. For more beautiful and stronger nails!