If you have sensitive skin, purchasing a pair of sunglasses or eyeglasses can be a bit challenging. Low quality metals such as nickel alloy and plastics are often used to manufacture eyewear and can leave the skin irritated and uncomfortable. RAEN manufactures all of its handmade acetate frames with stainless steel hardware and core wire that are free of these cheap materials. Added benefits of the stainless steel hardware include durability and corrosion resistance. No rash, no trash.