PlainVitamins

Hair, Skin & Nails

by DaVinci Laboratories · capsule · 60 capsules

  • On the market (NIH)
  • UPC 0 26664 01663 8
  • DSLD label 303960
  • Serving 2 capsules
  • 30 servings

Hair, Skin & Nails by DaVinci Laboratories lists 17 ingredients, 17 with an amount per serving of 2 capsules, such as 800 mcg of vitamin A, 100 mg of vitamin C, 20 mcg (800 IU) of vitamin D3 and 5 mg of thiamine. Its current label entered the NIH Dietary Supplement Label Database on December 14, 2023.

What is in Hair, Skin & Nails?

Each row as the label prints it, per serving of 2 capsules. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).

Hair, Skin & Nails: Supplement Facts rows against the market (DSLD label 303960, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Aas Retinyl Palmitate800 mcg89%
Vitamin Cas Ascorbic Acid100 mg111%Vitamin C in Hair, Skin & Nails against 18,583 products100 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg100 mg

50% of 18,583 products listing vitamin C give more (median 100 mg).

Vitamin D3as Cholecalciferol800 IU20 mcg (800 IU)100%Vitamin D in Hair, Skin & Nails against 14,175 products20 mcg per serving; the middle half of products list 10 mcg to 25 mcg, the median 15 mcg.DV 20 mcgUL 100 mcg20 mcg

Higher than 51% of 14,175 products listing vitamin D (median 15 mcg).

Thiamineas Thiamine Hydrochloride5 mg417%Thiamin in Hair, Skin & Nails against 9,830 products5 mg per serving; the middle half of products list 1.5 mg to 25 mg, the median 5 mg.DV 1.2 mg5 mg

46% of 9,830 products listing thiamin give more (median 5 mg).

Riboflavin5 mg385%Riboflavin in Hair, Skin & Nails against 9,824 products5 mg per serving; the middle half of products list 1.7 mg to 25 mg, the median 4 mg.DV 1.3 mg5 mg

Higher than 51% of 9,824 products listing riboflavin (median 4 mg).

Niacinas Niacinamide5 mg31%Niacin in Hair, Skin & Nails against 12,413 products5 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg5 mg

89% of 12,413 products listing niacin give more (median 20 mg).

Vitamin B6as Pyridoxal 5-Phosphate5 mg294%Vitamin B6 in Hair, Skin & Nails against 15,277 products5 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg5 mg

51% of 15,277 products listing vitamin B6 give more (median 6 mg).

Folateas L-Methyltetrahydrofolate Calcium800 mcg DFE200%
Biotin5,000 mcg16,667%Biotin in Hair, Skin & Nails against 9,447 products5,000 mcg per serving; the middle half of products list 50 mcg to 300 mcg, the median 200 mcg.DV 30 mcg5,000 mcg

Higher than 93% of 9,447 products listing biotin (median 200 mcg).

Pantothenic Acidas Calcium D-Pantothenate100 mg2,000%Pantothenic Acid (Vitamin B5) in Hair, Skin & Nails against 10,060 products100 mg per serving; the middle half of products list 6 mg to 50 mg, the median 12 mg.DV 5 mg100 mg

Higher than 86% of 10,060 products listing pantothenic acid (vitamin B5) (median 12 mg).

Iodineas Kelp150 mcg100%Iodine in Hair, Skin & Nails against 6,382 products150 mcg per serving; the middle half of products list 75 mcg to 150 mcg, the median 150 mcg.DV 150 mcgUL 1,100 mcg150 mcg

15% of 6,382 products listing iodine give more (median 150 mcg).

Zincas Zinc Bisglycinate ChelateTRAACS10 mg91%Zinc in Hair, Skin & Nails against 13,186 products10 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg10 mg

51% of 13,186 products listing zinc give more (median 11 mg).

Seleniumas L-Selenomethionine100 mcg182%Selenium in Hair, Skin & Nails against 7,658 products100 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg100 mcg

Higher than 65% of 7,658 products listing selenium (median 55 mcg).

Collagen Hydrolysateas Bovine500 mgCollagen in Hair, Skin & Nails against 1,008 products0.5 g per serving; the middle half of products list 0.1 g to 4.2 g, the median 1 g.0.5 g

56% of 1,008 products listing collagen give more (median 1 g).

Methylsulfonylmethane100 mgMethylsulfonylmethane in Hair, Skin & Nails against 1,454 products100 mg per serving; the middle half of products list 150 mg to 1,000 mg, the median 500 mg.100 mg

78% of 1,454 products listing methylsulfonylmethane give more (median 500 mg).

Hyaluronic Acid20 mgHyaluronic acid in Hair, Skin & Nails against 900 products20 mg per serving; the middle half of products list 10 mg to 100 mg, the median 50 mg.20 mg

64% of 900 products listing hyaluronic acid give more (median 50 mg).

Horsetail Herb Extract5 mgHorsetail in Hair, Skin & Nails against 519 products5 mg per serving; the middle half of products list 20 mg to 200 mg, the median 67 mg.5 mg

86% of 519 products listing horsetail give more (median 67 mg).

Source: NIH ODS Dietary Supplement Label Database, label 303960 (entered December 14, 2023), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • 89% of the 12,413 products that print an amount of niacin list more than its 5 mg of niacin (median 20 mg).
  • Its 5,000 mcg of biotin is higher than 93% of the 9,447 biotin products that print an amount; 311 list more.

The NIH database records one serving a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.

The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.

Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.

Which products have the closest formulas?

The products whose ingredient lists overlap most with Hair, Skin & Nails's, rare ingredients counting for more.

Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.

What does the label say about taking it?

Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.

Directions
Suggested Use: As a dietary supplement, take 2 capsules daily or as directed by your healthcare practitioner.
Warnings
Warning: If pregnant or nursing, consult your healthcare practitioner before taking this product.
Keep out of reach of children.
To obtain product information or report a serious adverse event, call 1-800-325-1776.
Allergens and what it does not contain
Gluten free Soy free
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 303960.

What else is on the label?

Other ingredients: Hypromellose, Microcrystalline Cellulose, Leucine.

How many labels does Hair, Skin & Nails have?

2 labels are on file under this name since June 22, 2023: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 303960 (current) Entered December 14, 2023 · on the market · 60 capsules · UPC 0 26664 01663 8
  2. Label 287873 Entered June 22, 2023 · off the market October 1, 2022 · 60 capsules · UPC 0 26664 01663 8

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names DaVinci Laboratories a division of FoodScience LLC (distributor), Williston, VT. All DaVinci Laboratories products.

Where next?