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Peter Thomas Roth

Potent-C™ Vitamin C Power Serum

4.0 · 797 reviews
10,089 ₽

What it is: A serum with 20% THD ascorbate—a mega-potent, ultra-stable ingredient 50 times more powerful than traditional vitamin C—that visibly brightens skin.Skin Type: Normal, Dry, Combination, and Oily Skincare Concerns: Dark Spots, Dullness, and Uneven Texture Formulation: Lightweight Serum Highlighted Ingredients:- THD Ascorbate 20%: Ultra-stable scientific breakthrough form of vitamin C that is 50 times more powerful than traditional vitamin C.- Vitamin E 3% and Ferulic Acid 2%: Help boost the performance of THD ascorbate vitamin C while providing antioxidant benefits. Ingredient Callouts: Free of sulfates SLS and SLES, parabens, formaldehydes, formaldehyde-releasing agents, phthalates, mineral oil, retinyl palmitate, oxybenzone, coal tar, hydroquinone, triclosan, and triclocarban, and contains less than one percent of synthetic fragrances. This product is also gluten-free.What Else You Need to Know: Packed with a jaw-dropping concentration of 20 percent THD ascorbate vitamin C, this serum’s performance is boosted by two ultra-powerful antioxidants to help hydrate and improve the look of fine lines, wrinkles, firmness, uneven skin tone, texture, and brightness.

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What it is: A serum with 20% THD ascorbate—a mega-potent, ultra-stable ingredient 50 times more powerful than traditional vitamin C—that visibly brightens skin.Skin Type: Normal, Dry, Combination, and Oily Skincare Concerns: Dark Spots, Dullness, and Uneven Texture Formulation: Lightweight Serum Highlighted Ingredients:- THD Ascorbate 20%: Ultra-stable scientific breakthrough form of vitamin C that is 50 times more powerful than traditional vitamin C.- Vitamin E 3% and Ferulic Acid 2%: Help boost the performance of THD ascorbate vitamin C while providing antioxidant benefits. Ingredient Callouts: Free of sulfates SLS and SLES, parabens, formaldehydes, formaldehyde-releasing agents, phthalates, mineral oil, retinyl palmitate, oxybenzone, coal tar, hydroquinone, triclosan, and triclocarban, and contains less than one percent of synthetic fragrances. This product is also gluten-free.What Else You Need to Know: Packed with a jaw-dropping concentration of 20 percent THD ascorbate vitamin C, this serum’s performance is boosted by two ultra-powerful antioxidants to help hydrate and improve the look of fine lines, wrinkles, firmness, uneven skin tone, texture, and brightness.

Customer reviews

5.0
verified purchase
A must have in my routine

I have tried some many vitamin c products and my skin kept getting irritated and finally tried this and my skin is brighter. No irritation and I’m so happy with my skin. It works well with my other skin care products.

11/24/2025
1.0
verified purchase
New packaging is terrible

New packaging is pathetic and I could barely extract any product. Either the pump didn’t work or there was no product inside. Ive been a fan of this product for 13 years so this is very disappointing

8/16/2025
1.0
verified purchase
Bottle malfunction

Loved this but don’t bother buying it with the new packaging. All the serum leaked out of the bottle. When I reported to Sephora they wouldn’t let me return since it was after 30 days. Save your $90

6/21/2025
5.0
verified purchase
A must have !

This is one of the best vitamin C serum i have ever used! And it a lot less expensive than the one at my dermatologist office which is the brand PCA .

5/23/2025
1.0
verified purchase
Please change packaging back to before

I absolutely love this product. I’ve used it every morning for several years and it is effective in reducing discoloration. The low rating is for the new packaging. I’ve never had an issue with the bottle leaking until my last purchase with the new packaging. After opening it for a few days I opened my suitcase to find the entire bottle had leake out somehow. I don’t understand how as you can t even open the bottle. Extremely dissatisfied.

5/17/2025
4.0
verified purchase
Great, but expensive

This is a great product, especially for sensitive skin because it uses Tetrahexadecyl Ascorbate instead of Ascorbic Acid. It also combines this with "partner ingredients" like ginger root extract that increase absorption of Vitamin C. The only downside is how expensive it is.

4/11/2025
5.0
verified purchase

I have been using this serum for about 7 months now. Absolutely made a difference in my skin tone and texture. I am 52, have not had any work done on my face….yet. I have tried pretty much every vitamin C serum on the market and this serum is a must have, I use it daily under my moisturizer and have seen a significant improvement in fine lines and dark spots. Worth the price? Absolutely!!

2/10/2025
4.0
verified purchase
AMAZING

As far as the product itself, I AM IN LOVE. My skin has never been happier. I have atopic dermatitis on my cheeks that has completely gone away. My skin looks like porcelain, it is brighter, glowy, and overall feels amazing. My only negative is the smell of the product it does have a very strong odor that I wish wasn’t there. But I would still recommend

1/28/2025
5.0
verified purchase
Effective on my brown spots.

This is the first time I’ve seen some movement in lightening my dark dots on my face from sun damage. I use it on top of my timeless vitamin c serum and this combo has resulted in a visual and slight difference.

1/20/2025
2.0
verified purchase
Meh results, feels good, I like the smell

What I like; feels good, absorbs well, isn’t oily, I like the campfire scent, think campfire or hearth candle. What I don’t like; for the price it’s not given much results so I’ll switch it to something else when I’m finished with it.

12/30/2024