Rated 4.7/5 by 163 happy customers

Response Theory - Antioxidant Serum

Sale price$35.00 Regular price$44.00
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✔️
ANTIOXIDANT BOOSTING

A powerful daily boosting serum

○ Essential daily antioxidant boost.

○ Energize your natural glow.

○ Anti-pollutant formula.

○ Light-as-air hydration.

Like a cozy security blanket for your skin, this serum is formulated with high performance botanicals technically extracted to give your skin the most fighting daily chance against environmental damages. Block out everything from urban pollutants to harmful nanoparticles and UV rays to keep skin flourishingly clear. Face the day.

30ml / 1oz

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Daily defense

Block out everything from urban pollutants to harmful nanoparticles and UV rays to keep skin flourishingly clear. Face the day.

Featherlight serum

A breathable barrier serum for a clear, flourishing complexion day in and day out.

Boost, brighten, energize

A drink of pure vitality directly to the skin, leaving a wake of softness, smoothness and repair in its path

Overall rating: 4.6625767 / 5 from 163 reviews.

AI Generated Review Summary

This antioxidant serum is praised for its ability to reduce fine lines, improve skin texture, and provide a noticeable glow. Customers appreciate its lightweight, non-greasy feel and the softness it imparts to the skin. However, opinions on the smell are mixed, and some users report increased breakouts.

Summary topics

  • Reduction of Fine Lines: 5%
  • Skin Feel: 19%
  • Skin Glow: 6%
  • Noticeable Skin Difference: 6%

Review topics: [results, smell, feels, issues, texture, skin, looks, shipping, glow, redness, face, use, breakouts, pores, ingredients, lines, weight, formula, balance, difference, effects, bottle, light, serum, mask, found, makeup, moisturizer, became, pump].

Review highlights

  • "I feel like my skin is finally evening out with way less to no breakouts."Jeanne J.
  • "It makes my skin feel great and really does resolve any acne or other blemishes super quickly."Hannah R.
  • "Makes my skin feel so smooth, less redness and in perfect balance!"Yanilda P.

Reviews

OBSESSED WITH THIS!!

"Every product from this company has completely transformed my skin. I am glowing and this serum is next level amazing!!"

Alyssa K. (5/5)

Refreshed

"This product has CHANGED MY SKIN. I've been blessed with youthful features and this helps to keep my skin fresh and clear."

Tara B. (5/5)

Youthful look

"Loving the retinol so far. Just started using it and I think I am seeing a different in tone and texture of skin. I love putting this every night and then putting the vitamin oil on top. It feels so lovely."

Aryana K. (5/5)

Promising so far!

"I'm loving the set so far! My skin feels smoother and less dry already."

Zara O. (5/5)

Alright

"Don't see too many results but the formula is very light and blends into skin well."

Kristen W. (3/5)

"I've been using daily for a little over a week now, and this makes my skin feel SO smooth. I use the clay mask at night and then apply this after rinsing."

Brea (5/5)

Serious Serum!!!

"This stuff is awesome. I live in Florida humidity 90+% and this serum delivers. It super light not greasy or sticky and great for oily or combo skin. I have definitely noticed more of an even tone to my skin and less redness that us irish girls tend to have. . . If your indecisive on this stuff I say go for it you've got nothing to lose except maybe some uneven skin tone."

Shannon H. (5/5)

Skin-saving serum! Response Theory is a powerhouse.

"Asarai’s Response Theory Antioxidant Serum has completely elevated my skincare game. From the first few uses, my skin felt more refreshed, calm, and visibly smoother. It has this featherlight texture that absorbs beautifully without any stickiness or residue. What I love most is how it shields my skin from daily stressors — pollution, sun exposure, dryness — you name it. I’ve noticed fewer breakouts, less redness, and a more even tone overall. It’s like a daily reset for my skin, packed with clean, potent ingredients that actually work. This serum layers perfectly under other products and has become my go-to for both morning and night. My skin has never looked so vibrant, and I truly feel like it’s helped bring balance and resilience back to my complexion. If you’re looking for a high-performing antioxidant serum that feels good, looks good, and delivers real results — this is it. Asarai nailed it. 👏🌿✨"

Robbie D. (5/5)

Best stuff ever

"I love this product. When will it be back in stock?"

Radhamery (5/5)

Love

"I love Response Theory as well as every other product Asarai has. My skin has never been better since I switched to this line."

Karyn G. (5/5)

Q&A

Hi, Is the product shipped from the United States? Do you have a phone number? Thanks, D.
Hi there! All our products are manufactured in Australia and shipped from our warehouse in the US. If you have any questions, we would love to help! You can get in contact with us at hello@asarai.com