So far I can't quite tell a difference with this product. It goes on well, but I'm thinking a vitC could be more effective... My other complaint is that I've noticed I tend to get pimples where I apply the product. Going to keep using to see if this helps my sun spots.

When my naturally very pale arms started to react to every skin event by producing semi-permanent skin marks, I threw the kitchen sink at ‘em.  This on top of Skinceuticals Discoloration Defense won hands down, so to speak. Because I always appreciate  it when reviewers mention it:  I have super-sensitive skin.  I’ve found this completely non-irritating, while actually working!  Hooray!

I love the clear consistency of this gel. It is thick enough to stay on longer on spots. I am sharing it with my hubby who has aging spots. Hopefully it would improve the appearance in the near future.  It is too soon to tell.