This made such a noticeable difference to my skin that people commented on it! I was looking a bit dull and lacklustre and this product genuinely made me look alive again! I don’t have sensitive skin so I could (and did) use this every day with no issue, but because I use Tretinoin (a topical retinoid) I now only use it on the nights I don’t use that. I’ve repurchased twice now, along with the 300 (which I use maybe once every two weeks or less) and I will keep repurchasing.
You do get a slight tingle and it’s a bit of an odd feeling at first but you get used to it pretty fast.