PlainVitamins

Keratin Hair & Nails with Biotin

by Reserveage Beauty · capsule · 60 capsules

  • On the market (NIH)
  • UPC 8 35552 00011 2
  • DSLD label 327279
  • Serving 2 capsules
  • 30 servings

Keratin Hair & Nails with Biotin by Reserveage Beauty lists 7 ingredients, 7 with an amount per serving of 2 capsules, such as 18 mg NE of niacin, 2 mg of vitamin B6, 300 mcg of biotin and 14 mg of pantothenic acid. Its current label entered the NIH Dietary Supplement Label Database on February 23, 2025.

What is in Keratin Hair & Nails with Biotin?

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).

Keratin Hair & Nails with Biotin: Supplement Facts rows against the market (DSLD label 327279, January 2026 release)
IngredientAmount% DVAmong products listing it
Niacinas Niacinamide18 mg NE113%Niacin in Keratin Hair & Nails with Biotin against 12,413 products18 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg18 mg

66% of 12,413 products listing niacin give more (median 20 mg).

Vitamin B6as Pyridoxine2 mg118%Vitamin B6 in Keratin Hair & Nails with Biotin against 15,277 products2 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg2 mg

69% of 15,277 products listing vitamin B6 give more (median 6 mg).

Biotin300 mcg1,000%Biotin in Keratin Hair & Nails with Biotin against 9,447 products300 mcg per serving; the middle half of products list 50 mcg to 300 mcg, the median 200 mcg.DV 30 mcg300 mcg

Higher than 53% of 9,447 products listing biotin (median 200 mcg).

Pantothenic Acidas Calcium D-Pantothenate14 mg280%Pantothenic Acid (Vitamin B5) in Keratin Hair & Nails with Biotin against 10,060 products14 mg per serving; the middle half of products list 6 mg to 50 mg, the median 12 mg.DV 5 mg14 mg

Higher than 51% of 10,060 products listing pantothenic acid (vitamin B5) (median 12 mg).

Zincas Zinc Oxide15 mg136%Zinc in Keratin Hair & Nails with Biotin against 13,186 products15 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg15 mg

Higher than 56% of 13,186 products listing zinc (median 11 mg).

Copperas Copper Sulfate1.7 mg189%Copper in Keratin Hair & Nails with Biotin against 6,468 products1.7 mg per serving; the middle half of products list 0.5 mg to 2 mg, the median 1 mg.DV 0.9 mgUL 10 mg1.7 mg

Higher than 66% of 6,468 products listing copper (median 1 mg).

Cynatine HNSas Keratin, Solubilized500 mgKeratin in Keratin Hair & Nails with Biotin against 102 products500 mg per serving; the middle half of products list 77.5 mg to 500 mg, the median 500 mg.500 mg

0% of 102 products listing keratin give more (median 500 mg).

Source: NIH ODS Dietary Supplement Label Database, label 327279 (entered February 23, 2025), 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?

Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.

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?

2 products list the very same ingredients; the nearest amounts come first.

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
Directions: As a dietary supplement, take 2 capsules daily to set the tone for a beautifully healthy day. The product can be taken on an empty stomach, with food or as recommended by your healthcare practitioner.
Warnings
Warning: Keep out of reach of children and pets.
Please consult your healthcare professional before taking this product, especially if you are pregnant, nursing, on medication or under a doctor's care.
Do not use if outer seal is broken or missing.
Allergens and what it does not contain
Gluten free
Storage
Best stored tightly closed in a cool, dry place.

Source: label statements in DSLD label 327279.

What else is on the label?

Other ingredients: Rice Flour, Gelatin, Silica.

How many labels does Keratin Hair & Nails with Biotin have?

One label is on file, entered on February 23, 2025.

  1. Label 327279 (current) Entered February 23, 2025 · on the market · 60 capsules · UPC 8 35552 00011 2

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

Who makes it?

The label names Reserveage Nutrition (distributor), Boca Raton, FL. All Reserveage Beauty products.

Where next?