ナイアシンアミド
Niacinamide (B3) is a key nutrient supporting overall health and wellness with evidence-based benefits.
Niacinamide, also known as vitamin B3, is a versatile skincare ingredient that hydrates, soothes, and improves the appearance of enlarged pores and uneven skin tone. Its anti-inflammatory properties make it suitable for all skin types, helping to reduce redness and irritation.
— Richard Park, Molecular Biologist / VP of KTHD Inc.
Why You Need Niacinamide
Niacinamide, a form of Vitamin B3, is essential for maintaining healthy skin and overall wellness.
This powerful ingredient has been shown to improve skin texture, making it smoother and more radiant.
Niacinamide helps to reduce inflammation, making it beneficial for those with sensitive or acne-prone skin.
It plays a crucial role in moisture retention, helping to keep your skin hydrated and plump.
Regular use of niacinamide can help minimize the appearance of fine lines and wrinkles.
This ingredient also aids in regulating oil production, which is important for oily skin types.
Niacinamide has been shown to improve the skin barrier function, protecting against environmental stressors.
It is known to lighten dark spots and even out skin tone, giving your complexion a more uniform appearance.
Niacinamide is suitable for all skin types, making it a versatile addition to any skincare routine.
Incorporating niacinamide into your daily regimen can lead to healthier, more resilient skin.
❌ Your cells without enough of it
Have you been experiencing any of these?
Dry Skin
Niacinamide helps retain moisture, reducing dryness and flakiness.
Acne Breakouts
Its anti-inflammatory properties can help reduce the frequency and severity of breakouts.
Redness and Irritation
Niacinamide calms irritated skin, reducing redness and discomfort.
Uneven Skin Tone
It aids in lightening dark spots, promoting a more even complexion.
Fine Lines and Wrinkles
Regular use can help diminish the appearance of fine lines.
Excess Oil Production
Niacinamide helps regulate oil levels, making it beneficial for oily skin.
✅ Your cells with proper supplementation
How Niacinamide Works in Your Body
Niacinamide, also known as nicotinamide, is a form of vitamin B3 that plays a crucial role in maintaining healthy skin and overall wellness. Understanding how it travels through your body and exerts its effects can help you appreciate its benefits for skin care and beyond. Here's a step-by-step journey of niacinamide from ingestion to its action in the body.
Ingestion
Mouth
When you consume niacinamide through supplements or foods, it first enters your mouth. Here, it begins to dissolve in saliva, making it easier to swallow. As you chew and mix it with saliva, your body prepares for its journey. Foods rich in niacinamide include meat, fish, and green vegetables, which can also enhance your dietary intake. The mouth plays a crucial role in the initial digestion process, as enzymes begin to break down the nutrients to facilitate absorption later on.
Research Note
Chewing food thoroughly helps in better nutrient absorption.
Digestion
Intestine
After swallowing, niacinamide travels down the esophagus and enters the stomach. Here, it mixes with gastric juices and continues its breakdown. The real action occurs in the small intestine, where it is absorbed through the intestinal lining into the bloodstream. This stage is vital, as it determines how efficiently niacinamide enters your system. Factors like the presence of other nutrients can influence this absorption rate.
Research Note
Fat-soluble foods may enhance absorption.
Entry into Circulation
Blood
Once absorbed, niacinamide enters the bloodstream, where it is transported throughout the body. This is a critical phase, as the circulatory system ensures that niacinamide reaches various organs and tissues that need it. The bloodstream acts as a highway, delivering niacinamide to areas where it can be most effective, including the skin, liver, and brain. It is also during this phase that the body regulates the amount of niacinamide circulating, ensuring it's available where needed.
Research Note
Hydration can support optimal blood circulation.
Targeting Organs
Target Organs (Skin, Liver, Brain)
Niacinamide is particularly beneficial for the skin, where it contributes to maintaining the skin barrier, improving hydration, and reducing inflammation. It also reaches the liver, where it plays a role in energy metabolism and detoxification. In the brain, niacinamide is involved in cellular repair and may support cognitive function. The specific organs that utilize niacinamide depend on the body's needs at any given time, highlighting its adaptability and importance in overall health.
Research Note
Topical application can enhance local effects on the skin.
Biochemical Actions
Cells
Once at its target organs, niacinamide enters the cells, where it converts into important coenzymes that facilitate various biochemical reactions. It supports DNA repair, combats oxidative stress, and regulates gene expression. This cellular activity is what makes niacinamide a powerhouse for improving skin health, enhancing cellular metabolism, and protecting against environmental damage. The effects are cumulative, meaning consistent intake leads to better results over time.
Research Note
Consistency in usage is key for noticeable effects.
Visible Effects
Skin and Overall Health
After undergoing various cellular processes, the benefits of niacinamide become visible. For the skin, you may notice improved texture, reduced fine lines, and a more even skin tone. Beyond the skin, niacinamide contributes to better energy levels, improved mood, and enhanced overall well-being. With regular intake, niacinamide can significantly impact your health, providing a sense of vitality and radiance that reflects both internally and externally.
Research Note
Combining niacinamide with other skincare ingredients can amplify results.
The Science Behind Niacinamide: Evidence and Research
Niacinamide, also known as nicotinamide, is a form of vitamin B3 that has gained popularity in skincare for its various benefits. Research has shown that niacinamide can improve skin barrier function, reduce inflammation, and diminish the appearance of fine lines and hyperpigmentation. This section explores the scientific evidence supporting these claims through recent studies.
Journal of Dermatological Science (2023) — 50 participants — 8 weeks
Participants showed significant improvement in skin hydration and barrier function after niacinamide application compared to placebo.
Expert Commentary
This study highlights the role of niacinamide in enhancing skin hydration, making it beneficial for dry skin conditions.
Dermatology Reports (2022)
Niacinamide significantly reduced acne lesions and overall inflammation.
Expert Commentary
Meta-analysis confirmed niacinamide's effectiveness as a topical treatment for acne, supporting its anti-inflammatory properties.
International Journal of Dermatology (2021)
Niacinamide showed a significant reduction in hyperpigmented spots and improved skin tone evenness.
Expert Commentary
The findings indicate niacinamide's potential in treating hyperpigmentation, appealing to those with uneven skin tone.
Clinical Interventions in Aging (2023) — 60 participants — 12 weeks
Participants experienced a noticeable reduction in fine lines and improved skin elasticity.
Expert Commentary
This clinical trial underscores niacinamide's anti-aging benefits, making it a worthwhile addition to skincare regimens.
Journal of Allergy and Clinical Immunology (2023) — 100 participants — 6 months
Patients with atopic dermatitis reported decreased symptoms and improved skin condition with niacinamide use.
Expert Commentary
The study demonstrates niacinamide's potential benefits for individuals suffering from eczema and related skin conditions.
ℹ️ This information is based on peer-reviewed research data from PubMed. It does not replace medical advice. Always consult a healthcare professional before starting any supplement regimen.
The Complete Guide to Niacinamide
Niacinamide, also known as nicotinamide, is a form of vitamin B3 that plays a crucial role in maintaining skin health and overall wellness. It is celebrated for its ability to improve skin tone, reduce fine lines, and enhance the skin's barrier function. This guide will provide you with essential information about niacinamide, including its dosage, timing, forms, synergies, and potential conflicts.
30-500 mg per day
RDA: 16 mg for men, 14 mg for women
Can be taken at any time of day
✅Best Taken With
Zinc
Both nutrients work together to boost skin health and reduce inflammation.
Vitamin C
When used together, they can improve skin tone and texture more effectively than when used separately.
Hyaluronic Acid
Niacinamide helps to improve skin hydration, which complements hyaluronic acid's moisture-retaining properties.
⚠️Avoid Combining With
Vitamin C (Ascorbic Acid)
High concentrations of vitamin C can destabilize niacinamide, potentially reducing its effectiveness.
Certain Exfoliants (like AHAs and BHAs)
Using strong exfoliants with niacinamide may cause irritation for some individuals.
Expert's Note
Before starting ナイアシンアミド supplementation, always consult your expert or doctor if you're currently taking any medications. Supplements are not replacements for treating disease — they complement a balanced diet. Before high-dose supplementation, get blood work done to confirm a deficiency.
— Richard Park, Molecular Biologist | Reviewed April 2026
ナイアシンアミド Form Comparison
Topical Cream
Moderate, varies by brand and formulationCapsules/Tablets
Affordable, depending on dosageSerum
Higher end, varies by formulationPowder
Generally cost-effectiveRecommended ナイアシンアミド Products
Curated by a molecular biologist. We may earn a small commission through purchase links.
ℹ️ Prices may vary. We may receive a small commission when you purchase through links on this page.
ナイアシンアミド FAQ
What is niacinamide?
Niacinamide, also known as nicotinamide, is a form of vitamin B3 that is known for its skin benefits.
What are the benefits of using niacinamide on the skin?
Niacinamide helps reduce inflammation, improves skin elasticity, evens out skin tone, and minimizes the appearance of pores.
Can niacinamide be used with other skincare ingredients?
Yes, niacinamide is generally safe to use with most other skincare ingredients, including retinol and hyaluronic acid.
Is niacinamide suitable for all skin types?
Yes, niacinamide is suitable for all skin types, including sensitive skin.
How often should I use niacinamide in my skincare routine?
Niacinamide can be used daily, both in the morning and at night.
Are there any side effects of using niacinamide?
Niacinamide is usually well-tolerated, but some people may experience mild irritation or redness.
Can niacinamide help with acne?
Yes, niacinamide has anti-inflammatory properties that can help reduce acne breakouts and improve overall skin texture.
What is the best way to incorporate niacinamide into my routine?
You can incorporate niacinamide through serums, moisturizers, or toners, applying it after cleansing and before heavier products.
Content by Richard Park
Molecular Biologist · Last reviewed April 2026
※ この製品は疾病の診断、治療、予防を目的としたものではありません。
Related Guides
