I found this useless.

價錢真係幾貴，但實際效用唔係好高，只係彈性方面提升左，亦有少少緊緻既感覺，但其實好多產品都可以做到咁既效果，而價錢平過佢，個人認為唔駛一定要買佢。

This kind of essence can produce 2 kinds of effects, including night care and skin absorption. When you use at night, it will help to make skin more comfortable and help you sleep more.

近來塊面變得乾燥暗啞, 試用了這款覺得效果不錯, 塗在臉部和頸部可減退皺紋, 十分滋潤, 肌膚也變得緊緻了, 看起來年輕了和亮澤了。

用完之後任何既妝都唔會再留係面上, 清潔功效極快, 十分好用, 而且用完之後好保濕水潤, 唔怕塊面會因為化妝而好乾, 平先係佢既賣點, 岩學生用

I have been using the HA Intensifier for 4 weeks. I love this new serum. I am 52 and have been using SkinCeuticals products for 13 years now. This serum has a lovely berry color to it, although it does not look like berry when put on your face. I use this in the morning after my CE Ferulic serum. It's have a good impact to me which helps me maintain a healthy and beautiful skin a long time.