Nicotinoyl Dipeptide-23
Peptide that supports skin barrier and elasticity
About Nicotinoyl Dipeptide-23
Nicotinoyl Dipeptide-23 is a bioactive peptide that combines niacinamide (vitamin B3) with a dipeptide chain, creating a hybrid molecule designed to target multiple signs of aging while strengthening the skin barrier. This ingredient represents the evolution of peptide technology in K-beauty, where brands like Numbuzin and DERMALINE are incorporating it into high-performance serums and ampoules. Unlike standalone niacinamide or simple peptides, Nicotinoyl Dipeptide-23 works on both the structural and metabolic levels of skin health. It supports collagen synthesis, improves skin elasticity, and enhances barrier function by promoting ceramide production. What makes this ingredient particularly valuable in Korean skincare is its ability to address the concerns of aging skin without irritation, making it compatible with other actives commonly found in multi-step routines. With a comedogenic rating of 0/5, it won't clog pores, and its presence in top-rated products like the Celladix Banana PDRN 2X Serum (5.0/5) demonstrates its effectiveness across different formulation types. The peptide is especially popular in products targeting mature skin, loss of firmness, and compromised barriers, often paired with other regenerative ingredients like PDRN and glutathione.
How Nicotinoyl Dipeptide-23 Works
At the molecular level, Nicotinoyl Dipeptide-23 functions through two primary mechanisms. The nicotinoyl (niacinamide) component enhances cellular energy metabolism by boosting NAD+ levels, which supports DNA repair and reduces oxidative stress. This helps cells maintain their regenerative capacity and resist environmental damage. Meanwhile, the dipeptide portion acts as a signaling molecule that communicates with fibroblasts, the cells responsible for producing collagen, elastin, and other extracellular matrix components. When these signals reach the fibroblasts, they trigger increased synthesis of structural proteins that give skin its firmness and bounce. Additionally, the peptide stimulates ceramide production in the stratum corneum, strengthening the lipid barrier that prevents moisture loss and protects against irritants. This dual action on both the deeper dermal layers and the surface barrier makes it a comprehensive anti-aging ingredient. The molecule's relatively small size allows for better penetration compared to larger peptide complexes, though it still benefits from delivery systems like ampoules and serums that enhance absorption.
Nicotinoyl Dipeptide-23 by Skin Type
Oily Skin
Nicotinoyl Dipeptide-23 is excellent for oily skin because it won't add heaviness or clog pores. The niacinamide component helps regulate sebum production, which can reduce shine and minimize the appearance of enlarged pores. It's particularly beneficial when oily skin starts showing early signs of aging or barrier damage from over-exfoliation.
Dry Skin
This ingredient is highly beneficial for dry skin, as it strengthens the barrier by promoting ceramide synthesis, which directly addresses moisture loss. The peptide supports skin's ability to retain hydration while improving texture and elasticity. Dry skin types will see the best results when this ingredient is layered under rich moisturizers, as seen in formulations like the DERMALINE Glutathione Toning Solution Ampoule (4.9/5).
Combo Skin
Combination skin benefits from Nicotinoyl Dipeptide-23's balanced approach to both hydration and sebum regulation. It addresses dryness in certain zones while the niacinamide component helps control oil in the T-zone. The non-comedogenic profile means it can be applied all over without causing breakouts in oilier areas.
Sensitive Skin
With a safety rating of 4/5, Nicotinoyl Dipeptide-23 is generally well-tolerated by sensitive skin. The barrier-strengthening properties can actually help reduce sensitivity over time by fortifying the skin's natural defenses. However, those with extreme sensitivity should patch test, especially in formulations that combine this peptide with other potent actives like retinol or high concentrations of acids.
Normal Skin
Normal skin can use Nicotinoyl Dipeptide-23 as a preventative anti-aging measure and general skin quality enhancer. It maintains healthy barrier function, supports natural collagen production, and keeps skin resilient against environmental stressors. This skin type has the flexibility to use it both morning and night without concern for sensitivity or excess oiliness.
How to Use Nicotinoyl Dipeptide-23
- 1Apply Nicotinoyl Dipeptide-23 serums or ampoules after cleansing and toning but before heavier creams to ensure optimal penetration into the skin.
- 2This peptide works well in combination with other anti-aging ingredients like PDRN, glutathione, and hyaluronic acid, as evidenced by its inclusion in multi-active formulations like the Numbuzin No. 9 NAD PDRN Glow Treatment Toner.
- 3For maximum anti-aging benefits, use products containing this ingredient consistently for at least 8-12 weeks, as peptides require time to stimulate visible changes in collagen and elastin.
- 4Layer under SPF during the day, as the niacinamide component can enhance skin's resilience to UV damage while the peptide supports barrier repair from environmental stress.
- 5If using around the eye area (like in the Numbuzin No. 9 NAD RetinA Volume Shot Eye Cream), apply gently with your ring finger to avoid tugging on delicate skin while still delivering the firming benefits.
Background
Nicotinoyl Dipeptide-23 emerged from the advancement of peptide technology in cosmetic chemistry during the 2010s, when researchers began exploring hybrid molecules that could deliver multiple benefits through a single ingredient. By conjugating niacinamide with a dipeptide chain, scientists created a molecule that addressed both the metabolic and structural aspects of skin aging. Korean beauty brands were early adopters of this technology, recognizing that their consumers valued efficient, multi-functional ingredients that could be incorporated into streamlined routines. The ingredient gained prominence in K-beauty around 2020-2022 as brands like Numbuzin and DERMALINE began formulating advanced ampoules and serums targeting the sophisticated Korean consumer who understands ingredient science. Its popularity reflects the broader trend in K-beauty toward biotech-derived actives that offer clinical-level results without the irritation associated with traditional anti-aging ingredients.
K-Beauty Products with Nicotinoyl Dipeptide-23
Banana PDRN 2X Serum
Celladix
D'LEXO Glutathione Toning Solution Ampoule
DERMALINE
No. 9 NAD PDRN Glow Treatment Toner
Numbuzin
No. 9 NAD RetinA Volume Shot Eye Cream
Numbuzin
EX-DW EGF Melatoning One Day Ampoule
Easydew
DW-EGF Melatoning One Day Ampoule Special Set
Easydew
No. 9 NAD Bio Lifting-sil Full Face Pack Sheet 4ea Set
Numbuzin
No. 9 NAD Bio Lifting-sil Full Face Pack Sheet
Numbuzin
DW-EGF Vitamin C Boosting Ampoule 25 Special Set
Easydew
EX DW-EGF Melatoning Patch
Easydew
No. 9 NAD Collagen Overnight Selfie Patch
Numbuzin
Frequently Asked Questions
Is Nicotinoyl Dipeptide-23 the same as regular niacinamide?▼
Can I use Nicotinoyl Dipeptide-23 with retinol or vitamin C?▼
How long does it take to see results from Nicotinoyl Dipeptide-23?▼
Why is this ingredient showing up in so many high-rated K-beauty products?▼
Is Nicotinoyl Dipeptide-23 safe for pregnant or breastfeeding women?▼
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