HEALTH & BEAUTY HAIR COLOR & DEVELOPER KEUNE Weight: 95GM. KEUNE HAIR STRAIGHTENER EXTRA is the perfect addition to your hair beauty routine. Keen Hair Straightener Extra is the perfect solution for people with naturally curly or wavy hair. It uses heat to straighten your hair without damaging it and comes with a 1-year warranty. Keen Hair Straightener Extra is the perfect tool for anyone looking to achieve salon-quality hair straightening results at home. KEUNE HAIR STRAIGHTENER EXTRA is an all-natural and effective hair straightener that will leave your hair looking sleek, silky, and healthy. It is a safe solution for those of us who are weary of using harsh chemicals on our locks. KEUNE HAIR STRAIGHTENER EXTRA is the #1 choice for hair straightening because it offers expert results in a fraction of the time.