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5 NAC y2 Serum 4x5 THUMBNAIL
no-color Repair Serum NAC Y²™ by 111SKIN
111SKIN

Repair Serum NAC Y²™ by 111SKIN

$350.00
Free shipping
Easy returns
Secure payment

Put time on pause with the serum that plumps, smooths, and restores healthy skin in just 2 weeks.* Formulated with surgical precision and powered by 111SKIN’s proprietary NAC Y²™ complex, this antioxidant-rich formula delivers potent actives deep into the skin.

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  • Delivers healthier, more radiant skin with a cooling texture that absorbs effortlessly into the skin
  • Proven formula backed by rigorous clinical and user trials
  • Skin type: All skin types
  • Targets: Dryness & irritation, redness, skin firmness & elasticity
  • How to use: After cleansing, apply 1–2 pumps to the face and neck using upward strokes, morning and evening
  • Cruelty-free and formulated without parabens, sulfates, and phthalates
  • Made by 111SKIN, a London-based company
Clinically proven
Cruelty Free
Paraben & Sulfate Free
Beyond Compare
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Price$350.00$350.00$350.00
Gift card credit$125.00$0$0
Savings (%)36%

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Multitude of industry-coveted awards
111skin3
REPAIR SERUM NAC Y²™

“Best Repair Serum”

Harper’s Bazaar Anti-Aging Skincare Awards

111skin4
REPAIR SERUM NAC Y²™

“Best Serum”

Modern Luxury Beauty Awards

111skin5
WRINKLE ERASING RETINOL PATCHES

“Best Wrinkle Patch”

Women’s Health Beauty Awards

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111skin6
CELESTIAL BLACK DIAMOND FACIAL MASK

“Best Sheet Mask”

Town & Country's Beauty Classics 

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Paraben & Sulfate Free

Formulated without harmful ingredients

Cruelty Free

Never tested on animals

Premium Ingredients

Effective, high-quality formulations

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We love to see our products out in the world, living their best lives. Show us your style with #OneQuince.

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ALL YOUR QUESTIONS, ANSWERED

1. Is the Repair Serum NAC Y²™ suitable for sensitive skin?

Yes, the Repair Serum NAC Y²™ is formulated for all skin types, including sensitive skin.

2. Is Repair Serum NAC Y²™ fragrance-free, cruelty-free, vegan-friendly, and free from harmful ingredients?

The Repair Serum NAC Y²™ is cruelty-free and free from parabens, paraffins, silicones, and sulphates. 111SKIN does not describe products as “vegan,” or “gluten free” and recommends examining the ingredient list for concerns.

3. Is the Repair Serum NAC Y²™ pregnancy safe?

111Skin product(s) are not certified to be pregnancy safe. It is advised to read the ingredient list present on product and for any queries or concerns to seek advice from a medical professional prior to use.

4. Can I use this serum after clinical treatments such as micro-needling?

Originally created to treat trauma after surgery, this serum is the perfect partner for nourishing the skin, and accelerating repair following clinical treatments.

5. Will this balance redness in the skin?

The restorative effects of the Repair Serum can aid in reducing redness and soothing irritated skin, by providing it with reparative ingredients.

6. How do you curate the branded products available on your site?

Our mission is to bring you the highest quality products at the best value. That extends to every brand we feature on our marketplace. We carefully vet and curate best-in-class brands that are leaders in their industry—brands known for their quality, craftsmanship, and performance. If it’s on our site, it’s a product we believe in.

7. Why do you only offer select brands?

We carefully curate every brand we feature to ensure it meets our standards for quality and longevity—so you can shop confidently without sorting through endless choices. By partnering exclusively with premium brands we trust, we make it easier for you to find products that live up to the same standards as our own.

8. Are the branded products authentic?

Quince is a certified retail partner of all brands on our site, which means you can shop with confidence knowing you're receiving genuine products shipped directly from the brand to you.

9. Where is your company located?

Our corporate headquarters is located in San Francisco, but our team and our makers are worldwide.

10. Do you have a store that I can visit?

Our business model was designed to minimize waste and overheads in order to bring you amazing quality products at an accessible price point. Stores are a large and costly endeavor which would ultimately impede that quest so, no.

11. Do you offer free returns & exchanges?

Yes, we have a 365-day return policy so that you can experience our exceptional essentials for yourself with no worries about being stuck with something you don’t like.

12. What if I have more questions?

If you have a question we’d love to answer it. Reach out to our friendly customer service team at care@onequince.com.

* Based on a consumer trial of 100 participants after four weeks of using the product twice daily.**Based on the results of a clinical trial of 30 participants using Tewameter to assess trans-epidermal water loss.***Calculated from the mean changes from baseline values. Based on the results of a clinical trial of 18 participants using Corneometer to assess skin hydration.