Vitamin C Serum 20% Pure L-Ascorbic Acid, Ferulic Acid, Vitamin E and Hyaluronic Acid for Face and Eyes Natural Anti Aging Anti Wrinkle 1oz. by Dr. Brenner

First and foremost, we all know that 20% potency is where it's at for Vitamin C serums and this delivers just that. It has noticeably helped brighten and even out my skin, especially pesky leftover marks from the occasional breakouts I still get. I also believe the addition of Ferulic Acid and Vitamin E enhances its effectiveness, providing that extra shield against free radicals. Honestly I'm just playing the long game and hoping these benefits prove true in time, ha!Comparing this serum to the much more expensive Skinceuticals alternative, I can confidently say this much more budget-friendly option holds its own. The ingredients list is nearly identical as you'll find on SkinSkool which is what drove me to try this.It was perfectly clear on arrival and has that classic Vitamin C serum scent, IYKYK. I've had it about 6 weeks now and the formula still hasn't taken on that darkening amber color so I trust that the batches are fresh and production quality is high with this brand. Will purchase again and not have to feel so bad about using it on both my face and décolletage given the price point!

Pros:- Great product. Works well. Dermatologists recommend that Vit C for collagen production should be the serum form of L-Ascorbic acid. Vit E makes the formula more powerful. Vit C + E = tocopherol. Ferulic Acid stabilizes. This product has it all and is very similar to the popular Skinceutical C E Ferulic ($166 for 1 fl oz)- It did not arrive oxidized/brown. It showed up clear- I use it every night with L’Occitane 25% Shea Butter. Next day, skin is less haggard, more moisturized, and younger looking, especially under my eyes- Significantly cheaper than buying Vit C product from dept store (Skinceuticals CE Ferulic is $166 for 1 fl oz)Cons:- Smells bad, BUT that’s ALL Vit C products. Vit C always smells bad- If it gets on your lips, wash it off, because it tastes horrible (typical for Vit C products)Guidance:- Reject and return any Vit C product that has turned brown! It means the Vit C has oxidized and does not work well anymore- Keep Vit C in a dark and in a cool place. I keep it in my medicine cabinet behind the mirrors. I turn the lights off when I pull it out and apply. I squeeze all the air out of the dropper/lid and screw dropper tightly back on, after every use- Vit C will break down/oxidize if used with copper peptides, salicylic acid, or retinol, so avoid combining with those moisturizers- Always apply “lighter to heavier.” Serum first, then moisturizer. If your skin is very dry and requires additional shea butter, put that on last- Remember not to use during the day if you’re going outside, because Vit C breaks down under sun and air

Love!! I’ve tried a ton of vitamin C serums and I never really noticed any kind of difference with them but I had come across this one on a medical blog. I have a thyroid problem that makes me have really bad hormonal cystic break outs and it recommend trying this to help prevent break out and fade scars/dark spots.I noticed a HUGE difference after one night of using this!! I wish I would have taken pictures but I didn’t expect it to work so well. I told all my friends to go buy it too. I also recently started using a derma roller (also bought on amazon) with this and literally the next day I’m shocked at how even and toned my skin looks.I subtracted 1 star because even though the product is effective I’m really not a fan of the texture. The serum is sticky which makes it hard to apply and I usually have to wash my hands after because they are also sticky. When I apply the serum I usually have to do it with a night moisturizer or another oil, and sometimes the extra oil makes me have a white head or two the next morning. Nothing serious just the really small kind that scratched off without leaving any kind of mark. But because of the sticky ness of the serum I’m not able to put it on during the day time because it makes my makeup/primer not stick to my skin and almost like peel off?But all that aside it is still awesome and totally worth it and I just keep using it at night stil! Can’t wait to try other dr. Brenner products now!

I love this serum and had it on subscribe and save. Im soooo sad its no longer Prime. Ugh. I've tried another brand to replace this one and there's no comparison. I used this one for about a year and my skin was noticeably brighter. Its frangrance free. I love the thin consistency. The Chemist Confession skincare chicks recommended it for the vitamin c being more stable than other comparable products. I found that to be true. It did turn sometimes before it ran out but it worked and I love it. Bring it back on Prime please!!!