Great Gift Ideas: Click here to see our Skincare Gift Guide

KNR Serum
KNR Serum
KNR Serum

KNR Serum

(19 customer reviews) Add a Review

$126 + FREE Shipping!

Purchase Qualifies for Complimentary Samples

A potent nighttime serum containing three star ingredients Kojic Acid, Niacinamide and Retinol – which, along with peptides and other rejuvenating ingredients, help brighten and even skin tone. read full benefits

Size: 1 fl oz.

SKU: KNR30BRT

Product Types: , , ,

Skincare Concerns: , ,

To learn more about our products and to compare at a glance, see our Product Reference Guide.

Benefits

Ideal for PM use, this serum contains three powerful agents: kojic acid, niacinamide and retinol – which, along with Vitamin C, peptides and other skin rejuvenation ingredients, help brighten and even skin tone.

  • Hydroquinone free
  • Helps deliver a clearer, brighter, more even skin tone
  • Helps reduce the appearance of wrinkles and pigmentation, decrease skin roughness and aid in nightly rejuvenation

Key Ingredients

  • 2% Kojic Acid – Helps even skin tone by helping to inhibit melanin production
  • 4% Niacinamide – Helps brighten and even skin tone, improve texture, smooth the appearance of fine lines and wrinkles and provide antioxidant protection
  • Retinol – Helps reduce the appearance of wrinkles and hyperpigmentation, decrease skin roughness and aid in nightly rejuvenation

Show Full Ingredient List

How to Use

Apply KNR Serum to cleansed, dry skin once or twice daily or as directed by your skin care provider. If applying in the AM, use of SPF 30 or higher is recommended.

Tip: Utilize Antioxidant CE Plus Serum in the morning and KNR Serum at night to coincide with the skin’s circadian rhythm and skin’s natural defense/repair process.

Reviews

  1. Caroline (verified owner)

    I really like this product and noticed a significant difference in the tone of my skin after just 2 months. My skin is more even and freckles lessened. I use morning and evening, and put on 3 pea sized amounts each time followed by sunscreen, at least in the am. Highly recommend!

  2. Sandy

    I have been using this serum at night and noticed that my skin is clearer. I suffer from redness, and I can already notice my redness decreasing. This serum was safe and gentle for my sensitive skin. I am excited to continue using this serum to see more benefits.

  3. Maggie

    I’ve been using this serum both AM & PM and I’m really happy with it so far! My skin feels more rejuvenated and nourished. I recently had a chemical peel & needed to find quality products to help maintain that glow, and this serum was the one. The serum glides on really well on my skin too!

Frequently Asked Questions

Biopelle KNR Serum is formulated for use in all skin types, including normal, combination, oily, and dry.  Biopelle KNR Serum does contain retinol which may cause some irritation in sensitive skin, therefore, it is a good idea to reduce initial application to every other night for the first two weeks. 

Niacinamide, also known as Vitamin B3, has many skin benefits including reducing hyperpigmentation and brightening skin tone, improving fine lines and wrinkles, and helping smooth and moisturize skin.

Results will vary depending on severity of pigmentation and skin aging .  In a clinical trial, sensitive skin patients with melasma, a very resistant form of pigmentation, saw significant improvement in pigmentation at three months.  It is important to note that pigmentation in sensitive skin is a delicate balancing act because irritation can lead further pigmentation.  For this reason, initial application was limited to every other night for the first two weeks during this clinical trial. (Source: Evaluation of Efficacy & Tolerability of a Pigment Correction Serum in Asian Women with Melasma, IMCAS poster 2022)  If you do not have sensitive skin and/or have mild uneven pigmentation, you can expect to see results sooner.

One container of Biopelle KNR Serum should last approximately 3 months when applied once nightly to the face.  If you are applying to the face and neck, your container may not last as long.

For enhanced brightening results, we recommend partnering Biopelle KNR Serum with one of our daytime serums, either Biopelle Antioxidant CE Plus Serum or Biopelle C+AHA Renewal Serum.  And to enhance the eye area, Biopelle Triple Action Eye Serum is a multi-tasking eye serum with Vitamin C.

You may also like…

  • XCP Brightening Serum Discontinued

    XCP Brightening Serum

    $126
  • Tensage Intensive Serum 50

    Tensage Intensive Serum 50

    $195
  • Exfoliating Cream Cleanser

    Exfoliating Cream Cleanser

    $29.70