DEFENSE Antioxidant Pore Purifier
Based on 18 reviews
Clear pores of daily debris and pollution plus brighten skin with a blend of antioxidants, salicylic acid and other skin-fortifying ingredients.

DEFENSE Antioxidant Pore Purifier

Based on 18 reviews
Clear pores of daily debris and pollution plus brighten skin with a blend of antioxidants, salicylic acid and other skin-fortifying ingredients.
  • Helps protect skin from environmental damage
  • Salicylic acid clears and refines pores
  • Ultra-lightweight fluid texture
  • Apply once or twice daily after cleansing
Skin Types:
All Skin Types
    1 oz
    Travel Size...
Why is it different?
Take control of the daily damage airborne pollutants have on skin’s appearance with this innovative, super-light fluid. Provides multi-level defense for skin to keep it looking younger, longer.
What does it do?
Pore-refining salicylic acid and antioxidants neutralize airborne pollutants and blue light exposure for healthier, fortified skin. Azelaic acid and vitamin C help brighten, while skin’s natural defenses are reinforced with non-fragrant plant extracts and niacinamide.
How to use
Gently shake before use. Once or twice daily, apply over face and neck. Do not rinse. For daytime, always follow with a sunscreen. Note: Antioxidant Pore Purifier complements your favorite Paula’s Choice daily exfoliants.
Show details
DEFENSE Skin Care System - Our multi-layer defense system to combat around-the-clock environmental skin damage.

Mechanisms of Ageing and Development, June 2018, pages 123-130

Advances in Clinical and Experimental Medicine, March 2018, ePublication

Nutrients, November 2017, ePublication; and August 2017, ePublication

Journal of Dermatological Science, May 2017, pages 162-169

Indian Journal of Dermatology, Venereology, and Leprology, July-August 2015, pages 420-423

Food & Function, August 2017, pages 2, 650-2, 662

Clinical, Cosmetic, and Investigational Dermatology, August 2015, pages 451-455

Dermatology Research and Practice, February 2015, ePublication

Antioxidants, December 2013, pages 230-245

Journal of Cosmetic Dermatology, March 2012, pages 37-41

Key Ingredients
Product Ingredients Water, Propanediol (solvent/hydration), Butylene Glycol (texture enhancer/hydration), Ethoxydiglycol (solvent), Glycerin (skin-replenishing), Ascorbyl Glucoside (vitamin C/antioxidant), Panthenol (hydration), Salicylic Acid (exfoliant), Camellia Sinensis (White Tea) Leaf Extract (antioxidant), Glycyrrhiza Glabra (Licorice) Root Extract (skin-soothing), Potassium Azeloyl Diglycinate (skin-brightening), Coffea Arabica (Coffee) Fruit Extract (antioxidant), Ceramide NP (skin-replenishing/restoring), Vitis Vinifera (Grape) Seed Extract, Panax Ginseng Root Extract (antioxidants), Niacinamide (skin-restoring), Phytic Acid, Epigallocatechin Gallate (antioxidants), Adenosine (skin-restoring), Ubiquinone (coenzyme Q10/antioxidant), Calendula Officinalis (English Marigold) Extract, Lonicera Caprifolium (Honeysuckle) Flower Extract (skin-soothing agents), Sodium Hyaluronate (skin-replenishing), Lecithin (skin-restoring), Centella Asiatica Extract (antioxidant/skin-soothing), Sucrose Stearate (emulsifier), Glycine Soja (Soybean) Seed Extract (antioxidant), Hydrogenated Lecithin (skin-restoring), Carbomer (texture enhancer), Tetrasodium Glutamate Diacetate (chelating agent), Caprylic/Capric Triglyceride (skin-replenishing), Caprylyl Glycol (emollient), Polysorbate 20, Polyglyceryl-10 Stearate (emulsifiers), Hydroxyethylcellulose (texture enhancer), Sodium Hydroxide (pH adjuster), Ethylhexylglycerin, Phenoxyethanol (preservatives).

Ratings & Reviews

Brighter and more clear skin


I struggle with combination skin in the cold months and an oil slick in the summer, with the cooler months presenting the greater challenge. Because I'm unable to use the BHA twice a day in the winter and develop clogged pores in my drier cheek area, I wanted something extra to help clear all the congestion. This works so well with a combination of nightly BHA and azelaic acid. My clogged pores have improved 90% within a month of use and looks better every day. I'm impressed.




Hydrating & Brightening Serum!!!


This is a beautiful, lightweight serum. My skin looks awake and feels nourished after application. I love using this 2x a day; it also amplifies the effects of my moisturizer.


New York


The best serum yet!


This serum is a must if you have clogged pores and either combo or oily skin. It literally improved my skin overnight and I would NEVER have expected that. I was previoulsy using the whole Resist oily skin line. Its a wonderful line but I was still battling with clogged pores (sigh, peri-menopause its like being a teenager again). Isabel from PC recommended this serum along with the Defense cleanser and already my pores look so much better AND my skin care routine is simpler because this serum packs so much into it. Love, love, love this stuff. Here is my pared back routine: 1. Defense Cleanser am, pm 2. Resist Weightless Toner am, pm 3. Resist Pore Refining Treatment 2% am, pm 4. Defense Pore Purifier am, pm 5. Am Youth Extending Daily Hydrating Fluid Spf 50 5. Pm Resist Anti-Aging Clear Skin Hydrator




Loving this whole new line


Super light but very powerful, sinks in quickly, great to put under moisturizer, foundation, very calming on the face. I have tried most of the things that PC has for dry/very sensitive skin, this whole line is somehow different, worked very well for me, my skin has never been better, no redness, no irritated skin, no dry patches.




Loving this texture


I'm huge into serums and I got this as a sample size. I use it during the day applied before moisturizer and SPF sunscreen. The texture is light and almost doesn't even need another step due to its moisturizing properties. Definitely want to order the full sized version.


Calgary, Canada


Glass Skin Goals


I've been using the DEFENSE night moisturizer for about a month, and liked it so much I wanted to get the serum to try it. Wow. I've used the serum with and without the night moisturizer now for about a week, and I'm super impressed. It makes my skin really smooth and even toned--very "reflective" and glassy. It also helps clear up congestion, which is awesome, because I cannot use the 2% BHA (my skin is just really sensitive to it, so if I use it less frequently I still have problems with congestion). I've seen some complaints about the .5% salicylic acid, but that's supposed to be the lowest effective concentration, and combined with the azelaic acid derivative, it seems to offer a good amount of exfoliation, brightening, and smoothing for daily use. This is the ideal product for me, and I can imagine it will be a life-saver when traveling since it's an all in one serum. I will use this as my daily evening serum, and add the stronger 10% Advanced Smoothing Treatment once or twice per week. Thanks for making great products, Paula!


Savannah, GA


Clear, Glowing Skin


This product, along with the Defense Nightime Moisturizer are the very best Paula's Choice products I have ever used (and i've Used A LOT!) I've been searching for silicone free, fragrance free, products with Azealic acid and Peptides forever. The closest thing I could find are Drunk Elephant products, but those are outrageously expensive and loaded with Marula oil that just breaks me out. The Defense line (not the SPF lotion- that has nasty silicones and while I love Paula, I don't agree with her stance on silicones) is magic! My skin has never been more clear, even toned, and glowing! I've struggled with terribly red, reactive, acne prone skin with giant pores most of my life. Not anymore. These products are genius.

Addicted to Skincare

Jensen Beach, FL


Love this product!!! Doesnt irritate my eyes!


I love the essential daily glow moisturizer! I use it every day - alone or under makeup. It is the only moisturizer with sunscreen I have ever used that doesnt irritate my eyes! I have worked out, went running and this stuff doesnt budge. It's amazing! It's taken me 30+ years to find it & I'm not letting go!


Victoria, British Columbia, Canada


Excellent serum for night - brighter, more even skin


I'm a guy and I love this serum. I tried it because it has azelaic acid as an ingredient (to help fight my melasma) but has a lighter, more fluid consistency than the Azelaic Acid Booster, which is the only other product (so far) with this ingredient. Since it's a light fluid, I've found that this serum is more comfortable to have on my skin, which I use in conjunction with a nighttime retinol moisturizer. I mix them both together on my fingertips and apply to my whole face and neck, which I've found works better than layering one on top of the other. They pair very well together and absorb quickly, leaving my skin looking smoother, more even, and brighter the next day. I wish this exact serum could be available without salicylic acid, otherwise I would wear it day and night. My skin is just too sensitive to have it on all the time with an exfoliant in the mix. I definitely recommend this serum to help clear up, recover, and maintain healthy skin. I have combination-to-oily skin and had no problem using this product.


Santa Barbara, CA


Great Serum, Absorbs well, Doesn't Cause Breakouts


I've been using the Defense serum daily for about 3 weeks. My new favorite serum! Texture feels great after application and absorbs quickly. Similar in consistency to the PC resist ultralight serum. Has caused ZERO breakouts! Made my complexion more even and minimized some redness. Makes skin unbelievably soft for rest of day. I can't stop touching my skin now; my husband also noticed how soft my face is and keeps stroking me cheeks, lol. I am very scientific about how I add new products (i.e: introducing one variable at a time and taking detailed notes of results daily), so I'm fairly sure the results are coming from this serum. It's now my only daytime serum. For Reference: 1) My skin type: Oily and (somewhat) sensitive skin, prone to breakouts, very few fine lines or wrinkles, in my early 30s. 2) My morning routine: PC skin balancing cleanser, aloe toner, vitamin C serum, PC Defense serum (this product), and PC skin balancing SPF 30.


North Carolina



4.7 18