Comparison
Healthy Skin & Hair plus Nails and Longer, Stronger Hair and Nails
Healthy Skin & Hair plus Nails (Irwin Naturals) lists 16 distinct ingredients and Longer, Stronger Hair and Nails (Irwin Naturals) 19 (rows of one ingredient counted once); 16 are on both labels. On the site's similarity measure, which compares ingredient lists (1 for the same list, rarer ingredients counting for more; amounts are not part of it), the two formulas score 0.78.
| Ingredient | Healthy Skin & Hair plus Nails | Longer, Stronger Hair and Nails |
|---|---|---|
| Vitamin C | 200 mg (222%) | 200 mg (222%) |
| Calcium | 30 mg (2%) | 30 mg (2%) |
| Fat (unspecified) | 1 g | 1 g |
| Zinc | 10 mg (91%) | 10 mg (91%) |
| Protein | 1 g | 1 g |
| Biotin | 2,600 mcg (8667%) | 2,600 mcg (8667%) |
| Manganese | 5 mg (217%) | 5 mg (217%) |
| Copper | 1 mg (111%) | 1 mg (111%) |
| Ginger | not disclosed | not disclosed |
| Black Pepper | not disclosed | not disclosed |
| Lysine | 80 mg | 80 mg |
| Horsetail | 160 mg | 160 mg |
| Gotu Kola | 180 mg | 180 mg |
| Flaxseed Oil | 1.06 g | 1.06 g |
| Proline | 80 mg | 80 mg |
| Citrus | 100 mg | 100 mg |
| Flavonoid | 50 mg | |
| Silicon | 11.2 mg | |
| Triterpene (unspecified) | 18 mg |
Amounts are per serving as DSLD gives them: Healthy Skin & Hair plus Nails, 2 liquid softgels; Longer, Stronger Hair and Nails, 2 liquid softgels. Current labels entered October 2021 and July 2023. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Healthy Skin & Hair plus NailsIrwin Naturals: every row against all products listing it
- Longer, Stronger Hair and NailsIrwin Naturals: every row against all products listing it