I've used around 6 bottles of this and I'm nearly on my 7th! I think this is a great essence for those with dry and sensitive skin that needs to be healed and hydrated! I've noticed a gradual lightening of my acne scars/pigmentation with this essence too but it is not something that will erase it or fix it completely (if you want that you'll need something stronger). It is very gentle and I think it will work best for people with sensitive, dry and damaged skin that just needs something that will be gentle and calming for the skin. If you have resilient skin that needs strong changes or treatment this might be too gentle for you though.