Vitamin C Solution

Brighten & even out your skin tone

100-day money back guarantee

Use for these skin issues

  • Dark spots
  • Dull skin
  • Blotchy skin
  • Uneven skin texture
Open Formula

Vitamin C Solution reduces the appearance of dark spots and hyperpigmentation. This powerful antioxidant tackles sun damage to brighten the skin.

15% L-ascorbic acid – the most potent form of Vitamin C - fights oxidants (aka 'free radicals') created by pollution and environmental damage. Gives you a healthy glow.

Open Formula

Real people real results

Open Formula

"Worth every penny! This brightens, slowly fades dark mark's, smooths skin, and feels great!"
- Angelicque

Open Formula

"I am pretty amazed at how well this works for such a good price. It makes me rethink all the expensive serums."
- Jenna

Open Formula

"After 3 weeks of using every night my skin is noticeably smoother and it just looks brighter and younger"
- Lora

Why Open Formula Is Better

Clinical strength
Rated "highly effective"
Minimal ingredients
Clean formula
100-day money back guarantee


50,000+ customers trust Open Formula

How vitamin C Solution works

  • Vitamin C is an antioxidant that counteracts molecules damaged by UV radiation or pollution (aka “oxidants or free radicals”)
  • It prevent those molecules from causing skin damage and signs of aging

Why People Love Open Formula

Open Formula
Made & Shipped From USA
100-day money-back guarantee
Not tested on animals
No animal products used
Open Formula

100% Clean Formula

Safe for you and the environment

Minimal Ingredients

And fully transparent

The Formula
The antioxidant L-ascorbic acid (Vitamin C) 15%
The base Water 85%

Easy to apply

  • Apply product to the face and neck – with your fingers, or drop directly on the skin
  • Gently massage it in. Let it absorb and continue with your skincare routine
  • Use it after cleansing and before any creams

Customer Reviews

Based on 112 reviews
Tamara Daugherty
So far I love this.

It brightened my face back up and my brown spots are starting to fade. I even used it on some keratosis and they are shrinking. My camera does not work well but trust me this does.

Looooove it! 😍

Improved my skin tone and brighten since first used. Not just only on my face but also on my belly after delivered baby no. 2. I’m very happy about the result.

Fantastic product ❤️

My face after two months is much more smooth and glow . So soft . l love Vitamin C serum . My dark spots are much lighter .

Love this product!

I love this product! It has faded my dark spots and I’ve been using it for about a month now. I don’t know if it will get rid of them completely but it has definetly faded them


I’ve use so many different products and I am happy with the result of this one. Only uses a couple weeks and see the differences already. Thank you!

Smooth and glowy

I’m almost out of my first bottle and I noticed a big difference yesterday in my skin while looking in my car’s side mirror. Smooth and even is what I noticed. Now, I’m here ordering another bottle.

First time using Vitamin C!

In August 2020, I saw the advertisement on Instagram for Open Formula and decided with all the reviews that I would get the vitamin C for reducing dark spots on my face and to see if my face really did glow! And Guess what? does! The dark spots are slowly fading! I use the Open Formula retinol serum at night and the combo I think, is the winning ticket!

Free Radical Fighter!

If dark spots and fine lines are invading your skin, than this product is your go to for fighting these off! I am 37 yrs. old and have spent many years outside tanning, playing with my kids, volunteering outside events, SMOKING CIGARETTES, etc. and with all that uv exposure, and pollution, it took quite a toll on my skin. However, this Vitamin C serum has not only diminished my dark spots by brightening my skin, it has also given my face a plumper more youthful appearance in a very short amount of time.

**** Side note, this product worked well alone but when paired with the Retinol at night, the results were even better!

Second time purchasing

This is the second time I have ordered the Vitamin C serum. I really like it. I think it has helped with the appearance of my skin. I am 38 and have sun spots. I think it has helped lessen the darkness of the spots. I think it also makes my skin look more plump and hydrated. I have had zero reaction (breakouts) to the product.

I'm sold!

I’m 68 years old and have not been kind to my skin over the years. I am blonde and fair and tried for years to tan not realizing what I was doing to my skin, but I really believe by using this product I constantly get compliments on how pretty my skin is with any wrinkles!!!!!!! I have tried some very expensive products - with well-known names , and none have compared to this serum. I have to admit, I don’t just buy 1 at a time, but several so I stay in stock. Yes, I am truly SOLD on this item.