Longer, Stronger Hair and Nails
Irwin Naturals Longer, Stronger Hair and Nails is a botanical and nutrient blend formulated to support hair and nail health. This product achieves an N+ Score of 78, resulting in a B- grade, signifying a good quality formulation. Key ingredients such as Vitamin C (200mg), Biotin (2600mcg), Zinc (10mg), Copper (1mg), and Manganese (5mg) are present at clinically studied dosages, which research suggests may support their intended benefits. While most ingredients are adequately dosed, Calcium is noted as underdosed. With a total of 16 ingredients and full label transparency, consumers can clearly see the full profile. This supplement may appeal to those looking for a comprehensive approach to beauty support.
About This Product
Longer, Stronger Hair and Nails by Irwin Naturals is a collagen & beauty supplement containing 16 active ingredients. It has earned an N+ Score of 78/100 (Grade B-).
This product features a fully transparent label with individual ingredient amounts disclosed, and key ingredients are present at clinically effective doses based on peer-reviewed research.
Notable clinical-dose ingredients include Biotin, Vitamin C, Zinc and 2 more.
N+ Score Breakdown
Are key ingredients present at clinically effective doses based on research?
Does the product include all expected ingredients for its supplement category?
Are individual ingredient amounts clearly disclosed without proprietary blends?
Does the formula include a breadth of beneficial compounds from multiple pathways?
Strengths
- +Key ingredients at clinically effective doses
- +Fully transparent label with individual ingredient amounts disclosed
- +Broad ingredient diversity exceeding category norms
- +5 ingredient(s) at clinical dose levels
- +Rich formula with 16 active ingredients
Weaknesses
- −Missing several expected ingredients for its category
Ingredient Analysis (16 ingredients)
| Ingredient | Amount | Dose Adequacy |
|---|---|---|
| Calories | 20.000 Calorie(s) | N/A |
| Total Fat | 1.000 Gram(s) | N/A |
| Biotin | 2600.000 mcg | Optimal |
| Vitamin C | 200.000 mg | Optimal |
| Calcium | 30.000 mg | Under |
| Zinc | 10.000 mg | Optimal |
| Copper | 1.000 mg | Optimal |
| Manganese | 5.000 mg | Optimal |
| Protein | 1.000 Gram(s) | N/A |
| Lysine | 80.000 mg | N/A |
| Citrus Fruit Extract | 100.000 mg | N/A |
| Flaxseed Oil | 1058.000 mg | N/A |
| Proline | 80.000 mg | N/A |
| BioPerine Complex | 12.000 mg | N/A |
| Gotu Kola herb extract | 180.000 mg | N/A |
| Horsetail herb extract | 160.000 mg | N/A |
Clinical ranges based on NIH ODS Fact Sheets and peer-reviewed research. Status indicates whether the amount meets evidence-based thresholds.