Comparison
Shine and Hair, Skin & Nails
Shine (Advanced Nutrition by Zahler) lists 25 distinct ingredients and Hair, Skin & Nails (DaVinci Laboratories) 17 (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 0.54.
| Ingredient | Shine | Hair, Skin & Nails |
|---|---|---|
| Vitamin C | 90 mg (100%) | 100 mg (111%) |
| Vitamin B6 | not disclosed | 5 mg (294%) |
| Vitamin D | 20 mcg (100%) | 20 mcg (100%) |
| Zinc | 11 mg (100%) | 10 mg (91%) |
| Niacin | 16 mg (100%) | 5 mg (31%) |
| Folate | 400 mcg DFE (100%) | 800 mcg DFE (200%) |
| Vitamin A | 0.9 mg | 0.8 mg |
| Pantothenic Acid (Vitamin B5) | 5 mg (100%) | 100 mg (2000%) |
| Riboflavin | 1.3 mg (100%) | 5 mg (385%) |
| Thiamin | 1.2 mg (100%) | 5 mg (417%) |
| Biotin | 30 mcg (100%) | 5,000 mcg (16667%) |
| Selenium | 55 mcg (100%) | 100 mcg (182%) |
| Iodine | 150 mcg (100%) | 150 mcg (100%) |
| Methylsulfonylmethane | 1,000 mg | 100 mg |
| Hyaluronic acid | 100 mg | 20 mg |
| Horsetail | 100 mg | 5 mg |
| Vitamin B12 | 2.4 mcg (100%) | |
| Vitamin E | 15 mg (100%) | |
| Chromium | 70 mcg (200%) | |
| Copper | 0.45 mg (50%) | |
| Lutein | 2 mg | |
| Tyrosine | 500 mg | |
| Lycopene | 2 mg | |
| Silicon | 2 mg | |
| Collagen | 0.5 g | |
| Keratin | 500 mg |
Amounts are per serving as DSLD gives them: Shine, 4 capsules; Hair, Skin & Nails, 2 capsules. Current labels entered February 2022 and December 2023. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- ShineAdvanced Nutrition by Zahler: every row against all products listing it
- Hair, Skin & NailsDaVinci Laboratories: every row against all products listing it