This is a nice serum and it definitely is great under makeup. I agree with the other reviewer who noted it's not for sensitive skin. So I liked it, but it's really active so I didn't find I needed it on top of all of the other products I was using.
Gives an amazing glow and you can definitely feel it working. To me it feels like Le Grand Serum and gives a similar glow; it's like a baby version. As I'm still young I feel I can use this for quite some time until switching to Le Grand Serum when I'm older. If you have sensitized or damaged skin I would wait for it to heal before applying this as it is very active and could further irritate.
Fountain of youth serum!! Purchase some your skin will thank you!!