Fast-Acting Joint Formula

Fast-Acting Joint Formula

Life Extension4.6 (697 ratings)
Format:Capsule Quantity: 30 Capsule(s) · 30 servings
Goals
$29.25 $0.97 per serving

Product analysis

52 out of 100

Fast-Acting Joint Formula combines keratin and Korean angelica, but undisclosed proprietary blend contents make the full formula harder to judge.

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

Nutrient Quality22

The Korean angelica component is named, but its preparation quality remains uncertain. Missing keratin form details and unidentified blend components limit comparison of the full mixture.

Ingredient Transparency60

Declared ingredient amounts and the blend total are stated. Most specific forms and the individual proprietary blend components are missing.

Value For Money80

Keratin is reasonably economical for the full serving cost. The undisclosed blend contents leave the value of its other components harder to judge.

Customer Satisfaction77

Customer feedback is very positive. Hundreds of ratings provide useful buying context, without establishing joint effects.

Product Focus40

Unknown blend components make the full formula’s complexity difficult to judge. Goal-specific usefulness remains uncertain, so the name alone cannot establish how quickly any benefit might occur.

Format
Capsule
Container
30 Capsule(s)
Per serving
$0.97
Customer rating
4.6 · 697 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