Extra Strength Hair Skin & Nails®

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.

Serving Size: 3 Tablet(s) · 1 per day

Not Present

• 

  21st Century Extra Strength Hair, Skin & Nails Tablets

  21st-century-vitamins4.6(7900)

  $9.99
• 

  21st Century Advanced Formula Hair, Skin & Nails 50 Tablets

  Walmart - Thrifty White Health4.6(12000)

  $10.42
• 

  21St Century Healthy Real Formula Hair Skin & Nails Extra Strength 90 Tablets Pack Of 2

  GoSupps.com4.6(7900)

  $54.99
• 

  Pack of 12-Hair Skin & Nails X/Str Tab 90 By 21st Century USA

  AmericanPharmaWholesale.com

  $82.47
• 

  21st Century Biotin

  21st-century-vitamins4.7(21000)

  $9.99
• 

  21st Century Biotin 5000 mcg

  Walmart4.7(7400)

  $12.60
• 

  21st Century Biotin 800 mcg

  21st-century-vitamins4.8(5800)

  $4.99
• 

  Biotin 21st Century Biotin 10,000 mcg

  MFI Medical

  $21.32

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

Showing representative supplement & health retailers — search above for stores in your area.

• Lux Beauty Supply

  4.6 (925)

  Beauty supply store

  290 S Decatur Blvd, Las Vegas, NV 89107

  Directions(725) 696-0229

• LV Beauty Supply 3

  4.4 (145)

  Beauty supply store

  Parking lot, 1136 S Decatur Blvd, Las Vegas, NV 89102

  Directions(702) 207-5035

• The Vitamin Shoppe

  4.7 (112)

  Vitamin & supplements store

  Pad J, 8820 W Charleston Blvd #102, Las Vegas, NV 89117

  Directions(702) 586-3671

• Beauty Supply Warehouse

  3.9 (969)

  Beauty supply store

  1401 N Decatur Blvd, Las Vegas, NV 89108

  Directions(702) 648-5162

• B-Beauty Supply

  4.2 (143)

  Beauty supply store

  1906 N Decatur Blvd, Las Vegas, NV 89108

  Directions(702) 636-6946

• Ulta Beauty

  4.1 (972)

  Cosmetics store

  2186 N Rainbow Blvd, Las Vegas, NV 89108

  Directions(702) 631-3668

• The Vitamin Shoppe

  4.6 (64)

  Vitamin & supplements store

  4115 S Grand Canyon Dr #104, Las Vegas, NV 89147

  Directions(702) 257-0379

• Ulta Beauty

  4.1 (710)

  Cosmetics store

  6689 Las Vegas Blvd S, Las Vegas, NV 89119

  Directions(702) 614-1780

• Antioxidants to defend healthy and youthful skin—current trends and future directions in cosmetology

  A Budzianowska, K Banaś, J Budzianowski… - Applied Sciences, 2025 - mdpi.com

  … body, including the skin, hair, and nails. This involves the use of … began in the late 19th century, notably with the observation of … Key compounds such as phenolics, vitamins C and E, and …

  202593 citations

• Mushroom cosmetics: the present and future

  Y Wu, MH Choi, J Li, H Yang, HJ Shin - Cosmetics, 2016 - mdpi.com

  … natural bioactive compounds for centuries and have recently … benefit bone health and strengthen the teeth, hair, and nails, … promoting healthy and strong hair and preventing hair loss …

  2016212 citations

• Clinical evaluation of a plant-based supplement on hair, skin, nail health, and psychological well-being: A 90-day observational study

  SJ Pandya, CH Savaliya, VB Shiravale… - Cosmoderma, 2025 - cosmoderma.org

  … role in maintaining healthy hair, skin, and nails. While severe deficiency is rare, mild or subclinical deficiency is common and can lead to hair thinning, brittle nails, and dry, irritated skin. […

  20251 citations

• Benefits and risks of hair, skin, and nail supplements in older adults

  V Shing, AA Sierra, AA Shah - International Journal of Women's …, 2025 - journals.lww.com

  … The cosmetic dietary supplement industry has a large and rapidly growing market, and a … to “promote healthy hair, skin, and nails.” However, the purported claims of dietary supplements …

  2025

• Nutrition for Healthy Hair

  RM Trüeb - 2020 - Springer

  … This chapter aims at reviewing some key historical moments in the development of our understanding of diet and health. Although food and nutrition have been studied for centuries, …

  202015 citations

• Consumer perception of biotin supplementation

  JJ John, SR Lipner - Journal of cutaneous medicine and …, 2019 - journals.sagepub.com

  … of reviewers claiming whether biotin helped with skin, hair, or nails were recorded. … of patients relying on internet resources for health care decisions. Moreover, dermatologists and other …

  201916 citations

• Riboflavin (Vitamin B2) on the Label

  What riboflavin is, how much a typical product provides, and why it can change the color of urine.

  VitaSuppTrack Editorial· Jun 24, 2026
• Magnesium Forms Explained: Oxide, Citrate, and Glycinate

  The magnesium form on a label affects how much elemental magnesium you get. Here is how the common forms compare.

  VitaSuppTrack Editorial· Jun 24, 2026

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2025-03-25. DSLD Label ID: 326326. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.