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Liquid Collagen

Applied Nutrition
4.4
★ ★ ★ ★ ★
(15740 ratings)
Horsetail 134 mg
Biotin 2000 mcg
Choline 15 mg
Collagen 4000 mg
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Score64
A broad liquid beauty formula combines a meaningful collagen amount with biotin and silica. Missing collagen details, an opaque antioxidant blend, and a short supply limit confidence and value.
How scoring works
Quantity:10 Liquid(s) • (10 servings)
Goals:
Nail Health
Skin Health
Hair Health
Anti-Aging

Score 64

A broad liquid beauty formula combines a meaningful collagen amount with biotin and silica. Missing collagen details, an opaque antioxidant blend, and a short supply limit confidence and value.
How scoring works
$11.24($1.12 per serving)
iHerb
$ 12.99
Amazon
$ 12.99
Walmart
$ 11.24
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Analysis

A 4-gram serving of hydrolyzed collagen anchors the formula and is joined by 134 mg of silica-designated horsetail extract and 2,000 mcg of biotin. That combination covers connective tissue, hair structure, and nail support more broadly than a biotin-only supplement.

Important quality details remain unclear. The label does not identify the collagen source, collagen types, amino acid profile, or protein verification, while the 3,030 mg antioxidant blend does not reveal its individual ingredients or doses.

Single liquid tubes are convenient, but the package provides only ten servings and offers weaker value than longer-use formats. The formula fits beauty-focused users who value convenience, provided they are comfortable with the undisclosed blend and report the high biotin intake before laboratory testing.

Who is it for
  • Adults seeking combined skin, hair, and nail support
  • People who prefer ready-to-use liquid servings
  • Users who want collagen plus biotin rather than either ingredient alone
Best for
  • Nail structure support
  • Beauty-focused collagen supplementation
  • Portable single-serving use

Pros

  • Provides 4 grams of hydrolyzed collagen per serving
  • Combines collagen with biotin and silica-designated horsetail
  • Liquid tubes require no mixing or pill swallowing
  • Active amounts for the main beauty ingredients are stated

Cons

  • Collagen source, types, and amino acid profile are not disclosed
  • The antioxidant blend hides its ingredients and individual amounts
  • Only ten servings are included
  • Choline is present at a very small amount for a choline-focused use

Warnings

  • Biotin at 2,000 mcg can interfere with some laboratory tests; disclose use before blood work.
  • The collagen animal source is not identified, so suitability for dietary or allergy restrictions cannot be confirmed.
  • The undisclosed antioxidant blend makes it difficult to screen for ingredient-specific sensitivities.

Nutrient quality

74 High impact

Hydrolyzed collagen and a substantial silica amount support the intended beauty uses. Low choline and B-vitamin amounts, ordinary nutrient forms, and an undefined antioxidant blend reduce confidence in the full formula.

Ingredient transparency

56 Moderate impact

Most named nutrients have specific amounts and the serving count is easy to identify. The antioxidant blend hides its components, while collagen source details and non-active ingredients are not supplied.

Customer satisfaction

70 High impact

The strong average rating is supported by a very large review count. No specific review details are provided to show recurring complaints or confirm firsthand experiences tied to the intended use.

Value for money

57 Moderate impact

The meaningful collagen and silica amounts provide some practical value in a convenient liquid format. Limited servings, weak secondary doses, and an opaque blend make the formula less competitive for routine use.

Report analysis

Goals

Nail Health
Impact
Highest effect
A Goal FitB+ Strength of SupportA CoverageA- Formula Quality
Collagen · 4000 mgBiotin · 2000 mcgHorsetail · 134 mg

Hydrolyzed collagen, biotin, and a substantial silica-designated horsetail extract cover structural protein, cellular growth, and nail-plate cross-linking. The combination is strongly aligned with brittle-nail support and uses meaningful amounts.

Collagen source, type, amino-acid profile, and protein verification are not disclosed, while horsetail standardization is incomplete. The 2,000 mcg biotin dose can interfere with some laboratory tests, so it should be reported before blood work.

Study evidence
Biotin Supportive 8 studies
Collagen Supportive 4 studies
Horsetail Not classified

No linked studies yet.

Skin Health
Impact
Highest effect
A Goal FitB+ Strength of SupportA- CoverageB- Formula Quality
Collagen · 4000 mg

Hydrolyzed collagen provides a meaningful structural dose, while horsetail-derived silica may support the connective matrix. The liquid also includes antioxidant support, although the collagen source and the large antioxidant blend are not fully disclosed.

The formula strongly targets skin structure and adds some oxidative-defense support. Biotin at 2,000 mcg can interfere with some laboratory tests, so users should disclose it before blood work.

Study evidence
Biotin Supportive 10 studies
Collagen Supportive 62 studies
Hair Health
Impact
Highest effect
B+ Goal FitB Strength of SupportB+ CoverageB Formula Quality
Biotin · 2000 mcgCollagen · 4000 mg

Hydrolyzed collagen, biotin, and silica address structural support, keratin production, and hair-shaft strength. The collagen and horsetail amounts are meaningful, giving the formula broader relevance than a single-vitamin product.

Missing collagen source details and an undefined antioxidant blend limit quality assessment. The biotin amount may interfere with some laboratory tests, so it should be disclosed before blood work.

Study evidence
Biotin Supportive 4 studies
Collagen Supportive 3 studies
Horsetail Not classified

No linked studies yet.

Anti-Aging
Impact
High effect
B+ Goal FitB- Strength of SupportB CoverageB- Formula Quality
Vitamin B12 · 0.56 mcgCollagen · 4000 mg

Hydrolyzed collagen provides moderate structural support for skin and joints, while silica and an antioxidant blend broaden the healthy-aging rationale. The liquid format is convenient for a measured serving.

The collagen source, types, amino acid profile, and protein match are not disclosed, while the antioxidant blend hides individual doses. These gaps make the broad formula less verifiable than its ingredient count suggests.

Study evidence
Collagen Supportive 33 studies

Ingredients

IngredientAmount per serving
Calories
25 Calorie(s)
Sodium
20 mg
Total Carbohydrates
2 Gram(s)
Thiamine (Thiamine Hydrochloride)
0.13 mg
Niacin (Niacinamide)
7.5 mg
Vitamin B6 (Pyridoxine Hydrochloride)
0.75 mg
Vitamin B12 (Cyanocobalamin)
0.56 mcg
Biotin
2000 mcg
Hydrolyzed Collagen
4000 mg
Antioxidant Blend
3030 mg
Horsetail (Equisetum arvense) extract (Silica)
134 mg
Choline (Choline Chloride)
15 mg
Adults 18–50
Report overview
Horsetail (Silica) · 134 mg OverallScore72
C+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyF Value

The liquid extract names Equisetum arvense and discloses a substantial silica amount, supporting both rapid delivery and strong potency. Missing plant-part and silica-standardization details leave some source-quality uncertainty. Serving cost is high for an extract that lacks a stated standardization percentage.

Biotin · 2000 mcg OverallScore69
B+ Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyC Value

The 2,000 mcg biotin amount offers mid-level potency for hair and nail support, though the active d-isomer is not identified. Liquid delivery and added collagen make value better judged across the full formula rather than from biotin alone. The biotin dose may interfere with some laboratory tests, so it should be disclosed before blood work.

C+ Active Ingredient Quality & BioavailabilityC- Dose, Safety & Label TransparencyF Value

Choline chloride is a usable systemic source, but the 15 mg serving provides only a small amount for a dedicated choline goal. One liquid tube is convenient and the label presents the choline amount directly. The limited dose makes cost efficiency poor despite the simple format.

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Sources

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

  1. Oral intake of collagen peptide NS improves hydration, elasticity, desquamation, and wrinkling in human skin: a randomized, double-blinded, placebo-controlled study.
    Lee M; Kim E; Ahn H; Son S; Lee H · Food & function · 2023
    Randomized trial100 participantsAnti-Aging Skin Health forCollagen
  2. Effects of hydrolyzed collagen supplementation on skin aging: a systematic review and meta-analysis.
    de Miranda RB; Weimer P; Rossi RC · International journal of dermatology · 2021
    Meta-analysis1,125 participants19 studies pooledAnti-Aging Skin Health forCollagen
  3. Oral supplementation of specific collagen peptides has beneficial effects on human skin physiology: a double-blind, placebo-controlled study.
    Proksch E; Segger D; Degwert J; Schunck M; Zague V; Oesser S · Skin pharmacology and physiology · 2014
    Randomized trial69 participantsAnti-Aging forCollagen
  4. Skin Anti-Aging and Moisturizing Effects of Low-Molecular-Weight Collagen Peptide Supplementation in Healthy Adults: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial.
    Lee E; Ahn DK; Kim JH; Lee S; Kim HJ; Lee HK; Shin JH · Journal of microbiology and biotechnology · 2025
    Randomized trial70 participantsAnti-Aging forCollagen
  5. Oral intake of specific bioactive collagen peptides reduces skin wrinkles and increases dermal matrix synthesis.
    Proksch E; Schunck M; Zague V; Segger D; Degwert J; Oesser S · Skin pharmacology and physiology · 2014
    Randomized trial114 participantsAnti-Aging forCollagen
  6. The Role of Sesbania grandiflora-Derived Biotin and Bambusa arundinacea-Derived Silica Extracts in Promoting Hair, Skin, and Nail Health: A Randomized, Double-Blind, Placebo-Controlled Clinical Study.
    Patel MN; Maheshvari J; Patel N · Cureus · 2025
    Randomized trial105 participantsHair Health Nail Health Skin Health forBiotin
  7. Low serum biotinidase activity in children with valproic acid monotherapy.
    Schulpis KH; Karikas GA; Tjamouranis J; Regoutas S; Tsakiris S · Epilepsia · 2001
    Clinical trial125 participantsHair Health Skin Health forBiotin
  8. Vitamins A, B, C, and D: A Short Review for the Dermatologist.
    Coerdt KM; Goggins CA; Khachemoune A · Alternative therapies in health and medicine · 2021
    Narrative reviewHair Health forBiotin
  9. The Infatuation With Biotin Supplementation: Is There Truth Behind Its Rising Popularity? A Comparative Analysis of Clinical Efficacy versus Social Popularity.
    Soleymani T; Lo Sicco K; Shapiro J · Journal of drugs in dermatology : JDD · 2018
    Narrative reviewHair Health forBiotin
  10. Low-Molecular-Weight Collagen Peptide Supplementation Improves Cellulite Severity, Skin Elasticity, and Hair Shaft Diameter: A Clinical Study with Pharmacokinetic Evaluation.
    Hwang S; Won J; Kim S; Kang W; Park M · Journal of medicinal food · 2026
    Randomized trial114 participantsHair Health forCollagen
  11. Calcium and Vitamin D Supplementation with and Without Collagen on Bone Density and Skin Elasticity in Menopausal Women-A Randomized Controlled Study.
    Duangjai A; Srivilai J; Nangola S; Amornlerdpison D · Clinics and practice · 2025
    Randomized trialHair Health forCollagen
  12. Dietary Collagen Supplementation as a Strategy for Skin Health: A Narrative Review of Clinical Effects on Skin, Hair, Nails, and Wound Healing.
    Biełach-Bazyluk A; Jurga M; Flisiak I; Zbroch E · Nutrients · 2026
    Narrative reviewHair Health forCollagen
  13. Biotin for the treatment of nail disease: what is the evidence?
    Lipner SR; Scher RK · The Journal of dermatological treatment · 2018
    Narrative reviewNail Health forBiotin
  14. Treatment of brittle fingernails and onychoschizia with biotin: scanning electron microscopy.
    Colombo VE; Gerber F; Bronhofer M; Floersheim GL · Journal of the American Academy of Dermatology · 1991
    Other32 participantsNail Health forBiotin
  15. Treatment of brittle nail with a hydroxypropyl chitosan-based lacquer, alone or in combination with oral biotin: A randomized, assessor-blinded trial.
    Chiavetta A; Mazzurco S; Secolo MP; Tomarchio G; Milani M · Dermatologic therapy · 2020
    Randomized trial50 participantsNail Health forBiotin
  16. Vitamins and minerals: their role in nail health and disease.
    Scheinfeld N; Dahdah MJ; Scher R · Journal of drugs in dermatology : JDD · 2007
    Narrative reviewNail Health forBiotin
  17. Oral supplementation with specific bioactive collagen peptides improves nail growth and reduces symptoms of brittle nails.
    Hexsel D; Zague V; Schunck M; Siega C; Camozzato FO; Oesser S · Journal of cosmetic dermatology · 2018
    Single-arm trial25 participantsNail Health forCollagen
  18. Influence of collagen peptide supplementation on visible signs of skin and nail health and -aging in an East Asian population: A double blind, randomized, placebo-controlled trial.
    Vleminckx S; Virgilio N; Asserin J; Prawitt J; Silva CIF · Journal of cosmetic dermatology · 2024
    Randomized trial85 participantsNail Health forCollagen
  19. Nail Supplements: When, How, and Why?
    Zaraa I; Richert B · Skin appendage disorders · 2026
    Narrative reviewNail Health forCollagen
  20. Expanding the COL7A1 mutation database: novel and recurrent mutations and unusual genotype-phenotype constellations in 41 patients with dystrophic epidermolysis bullosa.
    Kern JS; Kohlhase J; Bruckner-Tuderman L; Has C · The Journal of investigative dermatology · 2006
    Observational study41 participantsNail Health forCollagen
  21. Evaluation of biophysical skin parameters and hair changes in patients with acne vulgaris treated with isotretinoin, and the effect of biotin use on these parameters.
    Aksac SE; Bilgili SG; Yavuz GO; Yavuz IH; Aksac M; Karadag AS · International journal of dermatology · 2021
    Non-randomized trial60 participantsSkin Health forBiotin
  22. Generalized seborrhoeic dermatitis. Clinical and therapeutic data of 25 patients.
    Messaritakis J; Kattamis C; Karabula C; Matsaniotis N · Archives of disease in childhood · 1976
    Non-randomized trial25 participantsSkin Health forBiotin
  23. Holocarboxylase synthetase deficiency: novel clinical and molecular findings.
    Tammachote R; Janklat S; Tongkobpetch S; Suphapeetiporn K; Shotelersuk V · Clinical genetics · 2010
    Case series4 participantsSkin Health forBiotin
  24. Exploring the Impact of Hydrolyzed Collagen Oral Supplementation on Skin Rejuvenation: A Systematic Review and Meta-Analysis.
    Dewi DAR; Arimuko A; Norawati L; Yenny SW; Setiasih NL; Perdiyana A; Arkania N; Nadhira F; Wiliantari N · Cureus · 2024
    Meta-analysis967 participants14 studies pooledSkin Health forCollagen
  25. Effects of collagen-based supplements on skin's hydration and elasticity: A systematic review and meta-analysis.
    Danessa G; Notario D; Regina R · Indian journal of dermatology, venereology and leprology · 2025
    Meta-analysis646 participants10 studies pooledSkin Health forCollagen
  26. Oral Intake of Low-Molecular-Weight Collagen Peptide Improves Hydration, Elasticity, and Wrinkling in Human Skin: A Randomized, Double-Blind, Placebo-Controlled Study.
    Kim DU; Chung HC; Choi J; Sakai Y; Lee BY · Nutrients · 2018
    Randomized trial64 participantsSkin Health forCollagen