C25 Super Booster
Based on 186 reviews


C25 Super Booster

Target and minimize the look of stubborn dark spots, red marks and other imperfections with a 25% concentration of stabilized vitamin C for a dramatically more even complexion overall.

New Collection and name but same great formula!

C25 Super Booster

Based on 186 reviews


Target and minimize the look of stubborn dark spots, red marks and other imperfections with a 25% concentration of stabilized vitamin C for a dramatically more even complexion overall.
  • Patented time-release delivery system
  • Highly-concentrated Vitamin C visibly diminishes spots
  • Silky, rich texture
  • Use alone or add to your moisturizer or serum

New Collection and name but same great formula!

Skin Types:
All Skin Types
Wrinkles, Anti-Aging

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    0.5 oz
    Travel Size...

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Additional Information

Why is it different?
RESIST 25% Vitamin C Spot Treatment is now C25 Super Booster. This booster contains 25% pure vitamin C in a silky solution optimized for controlled delivery into skin where dullness and loss of moisture are most evident. With routine use, this solution works to visibly improve uneven skin tone and soften the appearance of even the most stubborn dull and rough surface texture.
What does it do?
Delivers a 25% concentration of pure vitamin C to skin via its patented, controlled-release delivery system, resulting in impressive skin-smoothing and brightening results. It also provides hydration and helps improve signs of aging.
How to use

At night, apply as the last step in your skincare routine. Gently pat (don’t rub) onto brown spots and wrinkles. Protect skin during the day with a product rated SPF 30 or greater.

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Key Ingredients ascorbic acid
Product Ingredients

Cyclopentasiloxane (hydration), Ascorbic Acid (vitamin C/antioxidant), Ethylhexyl Hydroxystearate (emollient), Polysilicone-11 (texture-enhancing), Dimethicone (hydration), Polymethylsilsesquioxane (texture-enhancing), Disteardimonium Hectorite (texture-enhancing), Propylene Carbonate (preservative).

Ratings & Reviews

effective, though expensive


This formula is water-free, so the vitamin C relatively is stabilized when in the tube, which is really good. I apply this usually after moisturizer or toner. It's not irritating my skin, but effective for the mild discoloration due to acne.


Atlanta, GA


Didn't do anything for me; weird residue


I received this is a free sample, which is good, because it turned out to not work for me. It did not diminish any spots or discolorations. Aside from that, it also leaves a dry white cast on the skin.


New England


Just try it


This is one of those products that's worth the money for the trial size to see if it will work for you. I'm really surprised by any review less than five stars. This is a superstar, holy grail product. It's a real magic bullet. It diminishes post-acne redness visibly overnight and disappears cystic zits like a mob hit. Ive also had success with brown spots, but I have fair skin and medium-brown spots. It's also really improved my crows feet. I use a tube until it's gone, forget about it a few months, and when I remember to buy it again it's like Christmas for my face. It brightens, plumps, fades redness, shrikes zits and smooths over NIGHT.


St. Louis




This product delivers on its promise. It will break up dark spots of HYPERPIGMENTATION from past blemishes, sun spots, melasma. 3 SUGGESTIONS BELOW: Use everyday, every other week, under sunscreen. See the difference in 1 month. Use it as a spot treatment. Apply toner with fingers, then take 1/2 pea size of this and dot it on problem areas, use slip from toner to spread it around entire face! Can you say "BRIGHTENER"?! Be creative, create your own way of using this wonderfully formulated product!

Beauty Biochemist



Healed Picked Acne Overnight!


No, you shouldn't pick at acne. Of course you shouldn't. No one should. But everyone does at some point, and if you're anything like me, you regret it immediately. I was using this for age spots (which it has worked well for, as long as I keep using my sunscreen daily), and accidentally put some on a picked spot. Woke up in the morning and the skin was HEALED. Still a little red and tender, but holy cow! HEALED. Fresh baby skin. I was amazed and thrilled. I'm not saying go crazy picking at your face, but I have begun using this along with PC's wonderful BHA products on any acne that pops up. And it helps the redness and helps heal it quickly. This is now a must have in my skincare routine. I'll take healing acne over diminishing age spots or wrinkles any day. So the fact that it also helps with age spots (can't say yet if it helps with wrinkles) is a huge plus. The only downside is cost. It's expensive! But it works!




Was my holy grail, but perhaps a formula change?


This was my go-to way to heal blemishes and calm them. I recently bought another tube and it is yellowy in color (it's always been white) and has a different consistency (drier than before) than previous tubes I've bought. It doesn't go on as smoothly or seem to be as effective. I am hoping this is a fluke batch/tube and I hope I can get another one with the original formula.


Seattle, WA

Sensitive skin and acne prone


I received a sample size of this product and I do feel like it works. It seems to be fading my acne marks that are still on the pink side (my acne lingers and can be stubborn to fade post marks). I don't know how effective this would be on darker marks. I am definitely using less concealer and foundation though the price point seems slightly high for a half ounce of product. I am also a budget shopper so that's just my opinion. If you have any freshly broken skin it does burn momentarily, but that doesn't bother me. Also I can't confirm any change in wrinkles, I don't really have any except for a significant expression line on my forehead and fine lines under my eyes (which this product cannot be used on eyes). I feel like if your main concern is wrinkles a retinol cream would be a better choice. OVERALL I think this product is great for lighter acne marks, a bit expensive, and underrated. I am considering purchasing the full size.




Didn't do anything for me


Saw no brightening or lightening of spots. Would recommend other PC products in place of this.


Toronto, ON


Great for spot treatment


Love using this on my crows feet and specific areas. This is kind of a strange consistency but I would say as long as you aren't planning on putting this all over you will love it. Remember to pat not smear this. I really notice a difference when I use it on my wrinkles. I tried using this to brighten a dark spot and it worked well after a week or so.


Winters, ca


I so wanted to love this....


...but sadly it burned like lava on my skin. Ouch! I will be returning.


Midland, Ontario



3.7 186