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Niacinamide

Form of vitamin B3 used in skincare and haircare

Nicotinamide (INN, BAN UK) or niacinamide (USAN US) (IUPAC name: 3-pyridinecarboxoamide) is a form of vitamin B3 found in food and used as a dietary supplement and medication. As a supplement, it is used orally (swallowed by mouth) to prevent and treat pellagra (niacin deficiency). While nicotinic acid (niacin) may be used for this purpose, nicotinamide has the benefit of not causing skin flushing. As a cream, it is used to treat acne, and has been observed in clinical studies to improve the appearance of aging skin by reducing hyperpigmentation and redness. It is a water-soluble vitamin.

Information, not medical advice. Talk to a licensed doctor or pharmacist before starting or changing a treatment.

Research 10

  1. Topical niacinamide does not stimulate hair growth based on the existing body of evidenceInternational Journal of Cosmetic Science · 2020 · 7 citations
  2. The Efficacy and Safety of Dr. SKS Hair Booster Serum (a Cocktail of Micronutrients and Multivitamins) in Adult Males and Females With Androgenetic Alopecia: An Open-Label, Non-randomized, Prospective StudyCureus · 2023 · 4 citations
  3. Niacinamide Down-Regulates the Expression of DKK-1 and Protects Cells from Oxidative Stress in Cultured Human Dermal Papilla CellsClinical Cosmetic and Investigational Dermatology · 2021 · 24 citations
  4. Efficacy of Dr. SKS Hair Booster Serum in the Treatment of Female Pattern Alopecia in Patients With PCOS: An Open-Label, Non-randomized, Prospective StudyCureus · 2023 · 5 citations
  5. Topical adenosine increases thick hair ratio in Japanese men with androgenetic alopeciaInternational Journal of Cosmetic Science · 2015 · 24 citations
  6. Axillary Hyperpigmentation Treatment: A Systematic Review of the LiteratureJournal of Cosmetic Dermatology · 2025
  7. Hair Thickness Growth Effect of Adenosine Complex in Male-/Female-Patterned Hair Loss via Inhibition of Androgen Receptor SignalingInternational Journal of Molecular Sciences · 2024 · 9 citations
  8. Interventions for preventing the progression of autosomal dominant polycystic kidney diseaseCochrane Database of Systematic Reviews · 2024 · 8 citations
  9. Personalized Compounded Hair Loss Treatments: A Compatibility Assessment of the TrichoConcept™ Vehicle Line.2025
  10. Scalp application of antioxidants improves scalp condition and reduces hair shedding in a 24‐week randomized, double‐blind, placebo‐controlled clinical trialInternational Journal of Cosmetic Science · 2021 · 23 citations
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Posts 17

  1. Teleclinic Germany 5 mg Fin prescriptionReddit · 20 Apr 2026
  2. Niacin: help or hinder?Reddit · 16 May 2016
  3. Has anyone had any hair growth with having niacin tablets?Reddit · 7 Jan 2021
  4. Trust the process guys. Duta 0,5mg and 5mg oral minox for a year. Hair and beard.Reddit · 4 Aug 2025
  5. Apparently they’re saying it’s gains are permanent unlike minoxidil. Has anyone tried this?Reddit · 8 Jul 2025
  6. Hairloss Treatment - General health and efficacy-conscious stack overviewReddit · 14 Oct 2024
  7. Is taking niacin good or bad for haif?Reddit · 5 Jan 2021
  8. Regression after switching from liquid to foam minoxidil?Reddit · 27 Apr 2024
  9. Finasteride causing so much acneReddit · 25 Oct 2022
  10. What to take from the Actifolic?Reddit · 28 Jan 2024
  11. Bloating on oral minoxidil - hyper responder, but stopping; seeking empathyReddit · 11 Jan 2024
  12. ~9 month progress update on KeepsReddit · 18 Nov 2023
  13. Microneedling and tretinoin, could the combination cause telogen effluvium ?Reddit · 30 Jan 2021
  14. How do you apply Tretinoin for Minoxidil extra results? (Apparently makes non responders respond)Reddit · 10 Oct 2020
  15. Best way to apply tretinoin?Reddit · 20 Dec 2020
  16. How to use redensyl hair serum?Reddit · 31 Mar 2024
  17. Nizoral 2% thoughts?Reddit · 6 Apr 2021
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