Stainless steel Gua sha designed to draine and eraze wrinkles. 
This tool has sharped edges, thinner then average gua sha, which gives it an advantage to effectively dephuff the face and smoothout wrinkeles. 
Can be used hot or cold.
This gua sha is literaly unbreakable. Bathroom floor and travel proof)
 
IMPORTANT: dont use strong pressure with this tool. Its not effective and can damage the skin.