It's lightweight and fast absorption, leaving only slightly sticky feeling behind (especially if you apply excessively). I can see a noticeable difference on the scars after a few weeks of using the serum (applied every morning and night) but it does take a very long time for it to completely disappear.
You can find a better serum compared to this at a more expensive price, but this is a good option for those who are searching for a brightening serum at a lower price (below RM100).
I would recommend purchasing the 5ml product first and apply it on your scars (not the whole face) to see the effects. One 5ml tube lasts me for more than a week (about 2 weeks, actually!) and you can already see a slight difference on your acne scars by then.
I think this serum gave me some tiny bumps on the forehead (not sure whether it's due to this but this is the only new product I'm using currently) so I wouldn't recommend using this serum for the entire face. Just apply it on your acne scars!!
The packaging is slightly awkward as well albeit unique, especially the 5ml tubes. It's pretty hard to pump it out when it's almost finished.