PlainVitamins

protein

Keratin supplements

Half of the 102 keratin supplements in the NIH label database that print an amount list 500 mg or less per serving; the middle half list 77.5 mg to 500 mg (DSLD version 9.4.0, January 2026).

Products listing it
116102 print an amount; 14 list it inside a blend without an amount
Median per serving
500 mgmiddle half 77.5 mg to 500 mg

How much keratin do supplements contain?

The median product lists 500 mg per serving. One in ten lists 50 mg or less, one in ten 500 mg or more. The amount printed most often is 500 mg (52 products).

Products by amount of keratin per serving

102 products, log scale; extreme 0.2% at each end left out of the drawing.

Keratin: products by amount per serving30 mg100 mg300 mg
Keratin: products by amount per serving30 mg100 mg300 mg
Keratin: products by amount per serving30 mg100 mg300 mg
Keratin: products by amount per serving30 mg100 mg300 mg
Keratin: products by amount per serving30 mg100 mg300 mg
The amounts printed most often
Amount per servingProductsFor example
500 mg52 Keratin Enhance With Biotin And Resveratrol 500 MG KERATIN (ResVitale); Nu Essence (Bronson Laboratories); Keratin Formula (Nature's Bounty Optimal Solutions)
50 mg16 Keratin 50 mg (Swanson); Skin Nutrition. (Gt); Hair Renewal (Codeage)
100 mg12 Biotin 10,000 mcg (Exchange Select); Biotin 10,000 mcg Plus Keratin 100 mg (Mason Natural); Hair, Skin and Nails Formula with Biotin & Keratin (Well At Walgreens)
25 mg5 Biotin 10,000 mcg Wild Berry Flavor (CVS Health); Collagen Tangerine (MDLogic); Hair Growth Tonic (HerbTonics)
150 mg4 Ultra Hair (OLLY); Hair Ultra Softgels (OLLY); Ultra Strength Hair (OLLY)
200 mg3 Metachel (Cardiovascular Research); Hair Envy (Angry Supplements); NZ-Hair (Everyday Health)
250 mg3 Keratin for Hair (The Vitamin Shoppe); Hair, Skin, and Nail Resilience (Progressive Professional from Progressive Laboratories); Hair, Skin & Nails Gummies Peach-Mango Flavor (Genestra Brands)
30 mg2 30 Day Beauty Regimen (Bronson); The 30 Day Beauty Secret (Futurebiotics)
70 mg2 Beauty Shake Strawberry Mojito Flavour (Regime London); Beauty Shake Pink Lemonade Flavour (Regime London)
10 mg1

Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).

Which products list the most keratin?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

In which products and brands?

Products listing keratin by DSLD product type

Keratin by product typeOther Combinations85Botanical with Nutrients12Amino acid/Protein3Vitamin1Non-Nutrient/Non-Botanical1
Keratin by product typeOther Combinations85Botanical with Nutrients12Amino acid/Protein3Vitamin1Non-Nutrient/Non-Botanical1
Keratin by product typeOther Combinations85Botanical with Nutrients12Amino acid/Protein3Vitamin1Non-Nutrient/Non-Botanical1
Keratin by product typeOther Combinations85Botanical with Nutrients12Amino acid/Protein3Vitamin1Non-Nutrient/Non-Botanical1
Keratin by product typeOther Combinations85Botanical with Nutrients12Amino acid/Protein3Vitamin1Non-Nutrient/Non-Botanical1

Brands listing it most: OLLY (6), Codeage (5), Reserveage Beauty (5), ResVitale (4), Reserveage Nutrition (4), The Vitamin Shoppe (3), Life Extension (3), Douglas Laboratories (3), Buried Treasure Liquid Nutrients (3), MDLogic (2).

Every product listing keratin

116 products, A to Z by name (page 2 of 3), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

Where next?