I received a box of 10 syringes of MESYA Bio Stem Cell Ampoules last week. I used one syringe every 3 days since it was my first time using stem cell ampoules. I applied one syringe of MESYA Bio Stem Cell Ampoules on my face and neck after washing my face with cleanser and applying toner. I found the stem cell ampoules absorbed into my skin very quickly. When I woke up the next morning, I found my face was still hydrated and not tight. Until now I have used 3 syringes of MESYA Bio Stem Cell Ampoules