The vitamin C beauty serum for youthful skin has many good ingredients in it like vitamin C and E and many more. You apply the serum a few times a day to your face and neck. It has a very light sent to it. The serum absorb very quickly and rubbed in nicely. I did not get any kind of skin irritation at all. I have very sensitive skin so I have to watch what I use. I have put this serum on now for a few days and I’ve noticed that my wrinkles have decreased a little. The serum is quite thin, so what I would suggest is put it on your fingers and then rub it into your face. Overall I like this serum and it seems to work good. I highly recommend it.