Fast-Acting Joint Formula

Fast-Acting Joint Formula

Life Extension4.2 (321 ratings)
Format:Capsule Quantity: 30 Capsule(s) · 30 servings
Goals
$29.25 $0.97 per serving

Product analysis

50 out of 100

Fast-Acting Joint Formula combines Korean angelica and keratin with a proprietary blend. The unspecified blend makeup makes the formula difficult to compare with alternatives.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality22

The individual makeup of the proprietary blend is not disclosed. Keratin’s form is also unspecified, while the quality of the named angelica preparation remains uncertain.

Ingredient Transparency60

The listed amounts are stated, allowing basic serving comparisons. The blend’s makeup and some forms remain unspecified.

Value For Money80

Keratin offers good value at the labeled serving price. That comparison does not establish the value of the whole combination.

Customer Satisfaction65

Customer ratings are generally positive. Several hundred ratings provide a useful picture of customer satisfaction.

Product Focus40

The formula is aimed at joint-related use. Unclear blend contents limit confidence in its practical contribution.

Format
Capsule
Container
30 Capsule(s)
Per serving
$0.97
Customer rating
4.2 · 321 ratings
Report analysis

Goals

Hair Health
Impact
Lower effect
C+ Ingredient FitF PathwaysF EvidenceA+ Formulation Logic
Keratin · 300 mg
Study evidence
Keratin Disputed 14 studies
Nail Health
Impact
Lower effect
C+ Ingredient FitF PathwaysF EvidenceA+ Formulation Logic
Keratin · 300 mg
Study evidence
Keratin Adverse 7 studies

Ingredients

IngredientAmount per servingScore
Hyal-Joint Complex
40 mg
Decursinol-50 Angelica gigas Nakai extract
200 mg
Cynatine FLX
300 mg 83
Adults 18–50
Report overview
Keratin · 300 mg OverallScore83
A+ Active Ingredient Quality & BioavailabilityC+ Dose, Safety & Label TransparencyB+ Value
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. The Effects of an Oral Supplementation of a Natural Keratin Hydrolysate on Skin Aging: A Randomized, Double-Blind, Placebo-Controlled Clinical Study in Healthy Women.
    Tursi F; Nobile V; Cestone E; De Ponti I; Lepoudere A; Sergheraert R; Soulard JP · Journal of cosmetic dermatology · 2025
    Randomized trialHair Health Nail Health forKeratin
  2. Halloysite/Keratin Nanocomposite for Human Hair Photoprotection Coating.
    Cavallaro G; Milioto S; Konnova S; Fakhrullina G; Akhatova F; Lazzara G; Fakhrullin R; Lvov Y · ACS applied materials & interfaces · 2021
    In vitro / ex vivo studyHair Health forKeratin
  3. Annurca Apple Nutraceutical Formulation Enhances Keratin Expression in a Human Model of Skin and Promotes Hair Growth and Tropism in a Randomized Clinical Trial.
    Tenore GC; Caruso D; Buonomo G; D'Avino M; Santamaria R; Irace C; Piccolo M; Maisto M; Novellino E · Journal of medicinal food · 2018
    Randomized trialHair Health forKeratin
  4. Keratin/alginate hybrid hydrogels filled with halloysite clay nanotubes for protective treatment of human hair.
    Cavallaro G; Caruso MR; Milioto S; Fakhrullin R; Lazzara G · International journal of biological macromolecules · 2022
    In vitro / ex vivo studyHair Health forKeratin
  5. Patient Satisfaction and Adverse Effects Following the use of Topical Hair Fiber Fillers.
    Babadjouni A; Juhasz M; Pham C; Csuka E; Hedayati B; Evron E; Mesinkovska NA · International journal of trichology · 2024
    Cross-sectional study40 participantsHair Health forKeratin
  6. Comparative Analysis of Type I Keratin Expression By Nail Consistency: An Immunohistochemistry Study.
    Mingorance Álvarez E; Rodríguez-León J; Pérez Pico AM; Mayordomo R · Applied immunohistochemistry & molecular morphology : AIMM · 2022
    Cross-sectional study32 participantsNail Health forKeratin
  7. Exposure to toxic agents alters organic elemental composition in human fingernails.
    Schumacher E; Dindorf W; Dittmar M · The Science of the total environment · 2009
    Cross-sectional study120 participantsNail Health forKeratin
  8. Human keratin diseases: hereditary fragility of specific epithelial tissues.
    Corden LD; McLean WH · Experimental dermatology · 1997
    Narrative reviewNail Health forKeratin
  9. Phenotype and genotype features of Vietnamese children with pachyonychia congenita.
    Chu HT; Dinh Duong TA; Le DH; Le TV; Nguyen BB; Dang CV; Vu QV · Pediatrics and neonatology · 2023
    Case series7 participantsNail Health forKeratin