It works brilliantly - good for sensitive skin and for a main skin-care routine product.

I'm not really into skincare so I've never really experimented with multiple products before. The only things I use is exfoliating face wipes and Simple products (like their night cream, spot roller etc), so I don't really have an awful lot to compare this to, but I can say how I feel about it after a few weeks of usage.

I don't wear make-up (never have) in any form, and I've never really had problems with spots or breakouts, so my skin overall is fairly perfect. I have a few scars on my face and a bit of T-zone dryness, but other than that I don't really have any problems with my skin (other than being sensitive).
BUT, after using this for just over 2 weeks now, I can say my skin has improved a lot! I didn't actually think I could make my skin any nicer (not that I made the effort), but this has!

I use it before bed (along with my night cream any spot roller if I need it) and also again in the morning after wiping my face and getting ready for the day.

It dries so fast which is good because I hate stickiness (probably the main reason I don't really use skin-care products).

It's a dropper bottle so you only need a few drops and it'll cover your whole face. Sometimes I actually use the dropper straight onto my face (in 4 places) and sometimes I just put 2-3 drops in my hand and rub it on my face that way.

My skin overall is a lot brighter, seems smoother and overall has sorted all the pigmentation issues I had before (from the T-Zone dryness drying out my head, and the few scars).

As I've had such good results with this, I can strongly say I am confident it will help me with wrinkling (I'm only 21 but you're supposed to start using anti-wrinkle creams around my age) so I will continue to use this!

I will definitely be buying this every time I need it (I currently can't comment on how long it lasts, but I will edit my review once I've finished the bottle and how long it took!).

I can't find a bad thing to say about this product at all, which is very rare for me.

Edit: it's also made of glass which is brilliant!