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Moumoujus

NIACINAMIDE.

Essential CAS 98-92-0 / SMOOTHING

Niacinamide, a stable form of Vitamin B3, is a multi-functional powerhouse ingredient renowned for its comprehensive benefits across diverse skin concerns. It is scientifically proven to enhance skin barrier function, visibly reduce signs of aging, and improve overall skin tone and texture with precision.

Summary

Strengthens skin barrier Antioxidant Reduces redness and inflammation Regulates sebum production Minimizes pore appearance Fades hyperpigmentation Evens skin tone Reduces fine lines and wrinkles Improves skin elasticity Anti-acne Skin brightening Anti-aging Cell-communicating ingredient

Science

Mechanism of Action

Niacinamide precisely reinforces the skin barrier by stimulating the endogenous production of essential lipids like ceramides, free fatty acids, and cholesterol, thereby minimizing trans-epidermal water loss (TEWL). Its antioxidant properties neutralize reactive oxygen species, while its anti-inflammatory action modulates pro-inflammatory cytokines and regulates sebum production. Furthermore, Niacinamide boosts key structural proteins such as collagen and keratin, exhibits anti-glycation effects, and diminishes hyperpigmentation by inhibiting melanosome transfer to epidermal keratinocytes. It also controls NFκB-mediated transcription through PARP-1 inhibition.

Research

Clinical Evidence

High confidence
Effective range 2–10%
Optimal

4-5%

Key findings

  1. 01 At 2-5%, Niacinamide offers gentle anti-inflammatory benefits and robust barrier support, making it ideal for sensitive skin and daily formulations.
  2. 02 Concentrations of 4-5% are well-tolerated and effective for general skin tone correction, visibly reducing pore appearance and skin unevenness within 8 weeks, with improvements in wrinkles noted after 12 weeks.
  3. 03 A 5% concentration significantly decreases wrinkles and skin roughness, demonstrating improvements in fine lines, hyperpigmented spots, texture, red blotchiness, and sallowness over a 12-week period.
  4. 04 Clinical trials at 4% demonstrate potent anti-inflammatory activity in the treatment of acne vulgaris, and when used at 2-4%, it exhibits superior antimicrobial activity in oily skin types against Cutibacterium acnes.
  5. 05 For more pronounced hyperpigmentation, a 10% concentration may be beneficial, though careful monitoring for potential irritation is recommended.

Transparency

Dusting Analysis

Not commonly dusted
Min. effective
2%
Red flag below
1%

Niacinamide exhibits clear concentration-dependent efficacy, with significant benefits typically observed from 2% upwards. Formulations containing less than 2% may not deliver substantial cosmetic improvements for targeted concerns, potentially indicating its inclusion for marketing rather than functional benefit. Higher concentrations (4-10%) are supported by robust clinical data for more pronounced results.

The Formula

Formulation

Solubility
Water
Optimal pH 5 – 7
0 7 14

Stability

Niacinamide is highly water-soluble, ensuring ease of incorporation into aqueous formulations. Optimal stability is maintained within a pH range of 5.0 to 7.0. Deviation below pH 5.0 or above pH 7.5 can lead to hydrolysis into nicotinic acid, potentially causing skin flushing and reduced efficacy. Prolonged exposure to temperatures exceeding 70°C, particularly at lower pH, further accelerates this conversion. High concentrations (≥10%) require careful formulation to prevent crystallization, often mitigated by the inclusion of humectants.

Synergies

  • Enhanced reduction of erythema and hyperpigmented spots when combined with 0.03% kinetin.

Conflicts

  • Very low pH products (below 3.5), such as strong exfoliating acids, can destabilize Niacinamide, leading to its conversion into potentially irritating nicotinic acid.
  • Prolonged heating above 70°C, especially in acidic conditions, should be avoided to prevent degradation.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
10%
Sensitization risk Low

The CIR Expert Panel has concluded Niacinamide and Niacin are safe for use in cosmetic products. Clinical evaluations have shown no stinging sensation at concentrations up to 10%, no irritation at concentrations up to 5%, and no sensitizing or photosensitizing effects, underscoring its favorable safety profile. It faces no restrictions in cosmetic products within the EU.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Essential

Niacinamide is an essential ingredient due to its broad spectrum of clinically proven benefits, strong safety profile, and remarkable compatibility across all skin types.

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