I swear by this product now. I have tried so many things, wasted so much money, on products to help my skin. I have horrible acne scars & I've been using this serum for a week, twice a day (mixed with witch hazel & moisturizer) my skin is completely different. My scars are basically gone!! It makes my skin so soft. I will most definitely be buying another bottle when this one is gone.

I've just used the product for a short time but already my skin feels smoother and looks more radiant. I'm using it in the morning in conjunction with a retinol at night per my dermatologist recommendation. The results could be a combination of of the two products. Either way I like it!

Edit: So I have changed the stars from 4 to 5; I have been using this product effortlessly for a few weeks now and I am very happy. I say effortlessly because I just apply it right after I wash and pat-dry my face, and then I am DONE. Sometimes I put a moisturizer on after, sometimes I don`t. Sometimes I apply some makeup, sometimes I don`t. I feel that the appearance and feel of my skin has really improved.I really appreciate that:It is cruelty-free;There is no stickiness or residue;It is gentle but quite effective;It soaks in rather quickly.I am now looking into the other products.Previous Review:I`ve only been using this for about a week; I did not give it the full 5 stars simply because of that. I will edit in the future.My skin does look and feel clearer, and it is much brighter. I did not expect this serum to moisturize, but it does. Sometimes I even forget to apply moisturizer after using it and my skin does not feel dried out.I also took a (desperate) chance and applied it to a bunch of raging mosquito bites on my feet and ankles (Cortizone and Benadryl were not helping at all). The bites were bright red, largely swollen, and insanely itchy - I could not even fit my feet into my flats. By the next day, the redness and swelling were gone and I just had a million little tiny dots on my feet and ankles. I keep applying it to speed up the healing and hopefully fade the marks faster.

Its like Gods work in a bottle, in less than a week my skin has cleared up of black heads and small blemishes thats been on my face for MONTHS. It also makes my skin smooth and glow, honestly I get amazed every time i look in the mirror. Officially cant live without it.

Can I just say WOW! The reviews are right on it. I have struggled with hyper pigmentation for almost eight years - from my daughter. Really bad pregnancy mask. I have had tried just about everything - from inexpensive over the counter to prescription and very expensive treatments. Nothing could completely get rid of it. In less than a week I have seen visible changes to my skin. Incredible. Customer for life!

I`m very pleased with purchasing the Vitamin C serum. I do think that after two weeks it really has smoothed out the fine wrinkles under my eyes and the texture of my skin has noticeably improved. Can`t think of anything I particularly dislike about it - I`m certain I`ll be ordering the 2oz bottle soon since I use it after washing my face each morning and evening!

I've been using this for a couple weeks now. It has a nice scent and feels good on my face. It's not very moisturizing, so if you tend to be oily, this would probably work for you. No brightening qualities yet, as I just started using 2 weeks ago. I've been using it once daily. May go to twice daily

Not terrible. But not the that great. It's really chalky. With some serums, I feel like my skin is glowing and I read the reviews for this and was hoping this would be one of those products (I wanted more for my dollar). But my skin doesn't look any better whatsoever and I've been using it for about a month. I'm super bummed but I don't necessarily think it's a bad product. Just doesn't work for me. (I'm italian American and a little Irish. Blue eyes. Blonde hair but lightish medium skin. Also I'm going to try the Super Serum and see if that works. I really like this company, and they care about their customers.

***UPDATE***I have changed my review from a 1 star to a 4 star. The customer service is incredible. A representative reached out to me and apologized about the issues I was having. They have offered me a full refund and advice on what products they have that might help my skin! They`ve offered me a complimentary bottle on a product they believe will help my skin after me naming the issues I have/want to resolve. A sincere apology, a refund, AND a complimentary bottle of a product that might help my skin? I couldn`t be happier with the customer service! This product has completely messed up my skin in just a couple days of use. I have worked so hard to improve my skin and this product has done damage. It`s almost as if the damage appeared overnight. So sad. I am completely unhappy with the state my skin is now in. Item feels more tacky on the skin than it is moisturizing. My skin is sensitive and this seems to have left my skin really red, NOT for sensitive skin. AND it smells like chemicals, not a pleasant smell. 100% would NOT recommend.

**Review Update: I suddenly noticed a difference on my hands, the age spots are getting lighter. I think this has happened because as I apply the serum, there is residue that has moved to back of my hands. So I started putting a drop on regularly and I am noticing an improvement.** I can see a difference in my skin, less redness for sure. Also, I think it is reducing some of my dark spots. I have an overall bright, clear look. I have been using it less than a month, so am looking forward to seeing the benefits after longer use. So far I am happy with the product and will continue to use it.