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Liquid Collagen Complex Healthy Hair Skin & Nails Delicious Grape Flavor

RejuviCare
4.5
★ ★ ★ ★ ★
(10506 ratings)
Biotin 1000 mcg
Vitamin B5 20 mg
Collagen 500 mg
Protein (unspecified) 1 Gram(s)
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Score69
Best suited to people who prefer a flavored liquid and want light beauty-nutrient coverage; the collagen amount is well below the range offered by focused structural-support products, so biotin and vitamins carry more of the formula than collagen.
How scoring works
Quantity:16 Liquid(s) • (32 servings)
Goals:
Skin Health
Hair Health

Score 69

Best suited to people who prefer a flavored liquid and want light beauty-nutrient coverage; the collagen amount is well below the range offered by focused structural-support products, so biotin and vitamins carry more of the formula than collagen.
How scoring works
$9.44($0.29 per serving)
Walmart
$ 12.99
Vitacost
$ 10.39
Vitacost
$ 10.39
iHerb
$ 9.44
Amazon
$ 9.44
iHerb
$ 9.44
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Analysis

A liquid beauty blend combining 500 mg collagen hydrolysate with biotin, vitamin C, vitamin B6, and pantothenic acid. The disclosed amounts make the main contribution reasonably easy to judge.

The collagen amount is well below the range offered by focused structural-support products, so biotin and vitamins carry more of the formula than collagen. Practical value depends on whether the main active and format match the user’s priority.

The product is best suited to people who prefer a flavored liquid and want light beauty-nutrient coverage. Benefits for appearance, structure, or wellness should be viewed as nutritional support rather than a guaranteed visible change.

Who is it for
  • People who prefer a flavored liquid and want light beauty-nutrient coverage
  • Adults whose diet leaves a gap addressed by the core ingredients
  • Users comfortable with the listed format and serving size
Best for
  • Liquid format may suit people who dislike pills
  • Biotin and vitamin amounts are clearly disclosed
  • Users who accept that collagen amount is only 500 mg

Pros

  • Liquid format may suit people who dislike pills
  • Biotin and vitamin amounts are clearly disclosed
  • Vitamin C supports normal collagen formation
  • Low calorie and carbohydrate contribution

Cons

  • Collagen amount is only 500 mg
  • Collagen source is not identified
  • Weak value for the structural dose
  • Inactive and flavoring details are incomplete

Warnings

  • The 1,000 mcg biotin amount may distort thyroid, hormone, or cardiac troponin blood tests; disclose use before testing.
  • The collagen source is not identified, so users with animal-protein allergies or dietary restrictions should verify it.
  • Liquid flavoring details are absent, so users with sensitivity to sweeteners or flavor additives should check the current label.

Nutrient quality

65 Moderate impact

Hydrolyzed collagen and d-panthenol are useful, while biotin has no specified form, and the collagen amount is far below common gram-level servings, while biotin is substantial. No amount is clearly excessive, though biotin may interfere with some laboratory tests, while the compact formula avoids unrelated active ingredients.

Ingredient transparency

76 High impact

Specific amounts are listed for every supplied active ingredient. No proprietary blend hides active doses, while flavoring, sweeteners, preservatives, and other inactive liquid ingredients are not provided.

Customer satisfaction

70 High impact

The supplied aggregate satisfaction metric is moderately favorable, and the large amount of aggregate feedback makes the metric highly stable. No review excerpts were provided, so recurring complaints and purpose-specific experiences cannot be checked.

Value for money

64 Moderate impact

The low cost helps, but the collagen amount is too small to support strong formula value. Each serving is inexpensive but delivers little collagen, while the short active formula avoids low-value extras.

Report analysis

Goals

Skin Health
Skin Health
Impact
High effect
A- Goal FitD+ Strength of SupportC CoverageB- Formula Quality
Vitamin C · 30 mgCollagen · 500 mg

Hydrolyzed collagen and vitamin C create a logical structural skin pairing, while biotin supports normal nutrient adequacy. The collagen amount is far below the servings commonly used for skin elasticity and hydration outcomes.

The label does not identify collagen source, type, or peptide profile, which limits quality assessment. The biotin amount can interfere with some laboratory tests and should be disclosed before blood work.

Study evidence
Biotin Supportive 10 studies
Collagen Supportive 62 studies
Vitamin C Supportive 53 studies
Hair Health
Hair Health
Impact
Moderate effect
C+ Goal FitD+ Strength of SupportC- CoverageB Formula Quality
Biotin · 1000 mcgVitamin C · 30 mgCollagen · 500 mg

Biotin and vitamin C support keratin metabolism and collagen formation, but the collagen amount is too small for strong structural support. Hydrolyzed collagen is an absorbable form, although its source and amino acid profile are not disclosed.

The formula touches several hair pathways but relies mainly on a moderate biotin contribution. 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
Vitamin C Mixed 5 studies

Ingredients

IngredientAmount per serving
Calories
10 Calorie(s)
Total Carbohydrates
2 Gram(s)
Protein
1 Gram(s)
Vitamin C (Ascorbic Acid)
 30 mg
Vitamin B6 (Pyridoxine Hydrochloride)
 5 mg
Biotin
1000 mcg
Pantothenic Acid (D-Panthenol)
 20 mg
Collagen Hydrolysate
500 mg
Adults 18–50
Report overview
Biotin · 1000 mcg OverallScore69
B+ Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyC Value

The 1,000 mcg biotin amount offers moderate potency rather than a targeted high dose. Liquid delivery is clean, and collagen plus other nutrients make the formula more valuable than biotin-only normalization suggests. The biotin dose may interfere with some laboratory tests, so it should be disclosed before blood work.

View ingredientView products
Vitamin B5 (D-Panthenol) · 20 mg OverallScore53
B- Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyF Value

D-panthenol is a usable provitamin form, though it is less directly aligned with the preferred B5 forms. The 20 mg serving supports basic maintenance but not intensive skin or metabolic goals. Cost efficiency is poor for the amount of active B5 delivered.

View ingredientView products
Collagen · 500 mg OverallScore20
D+ Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyF Value

Collagen hydrolysate provides an absorbable form, but the half-gram serving is too small for meaningful structural support. The declared protein is much higher than the collagen amount, while source, type, and amino acid details are absent. Low bottle cost does not translate into good collagen value because the total active yield is limited.

View ingredientView products
Loading alternative details
83 Performance

High Potency Maxi-Collagen 7000

Country Life
A full gram-level combination of hydrolyzed collagen and branded collagen peptides provides strong structural protein support, with vitamin C and biotin as useful complements. Its gram-level collagen coverage provides more structural depth than the original's 500 mg collagen amount.
75 Performance

Grass Fed Collagen Beauty Cranberry Pomegranate

Garden of Life
A substantial collagen-peptide serving with vitamin C, silica, and biotin directly supports the intended beauty focus. Its gram-level collagen coverage provides more structural depth than the original's 500 mg collagen amount.
75 Performance

Hair Collagen + Keratin

youtheory
Hydrolyzed collagen, keratin, and biotin are all meaningfully dosed for hair and nail support. Its gram-level collagen coverage provides more structural depth than the original's 500 mg collagen amount.
87 Budget

Collagen + C 2500 mg

Spring Valley
Branded collagen and vitamin C create a focused structural formula with a meaningful collagen amount and efficient serving value. It lowers recurring cost compared with the original while providing a clearer or more substantial nutrient contribution, though it is not an exact ingredient match.
58 Budget

Alive! Hair Skin & Nails Gummies Delicious Strawberry Flavored

Nature's Way
Biotin and vitamin C support the beauty positioning, but the collagen amount is far below meaningful gram-level servings. It lowers recurring cost compared with the original while providing a clearer or more substantial nutrient contribution, though it is not an exact ingredient match.
65 Budget

Ultra B-12

NOW
Several B vitamins, including methylcobalamin and dibencozide, support energy metabolism in a convenient liquid. It lowers recurring cost compared with the original while providing a clearer or more substantial nutrient contribution, though it is not an exact ingredient match.
84 Value

Tri-Layer Maxi-Skin Collagen + C & A

Country Life
Branded collagen peptides reach a meaningful skin-focused amount, with vitamin C providing a logical synthesis cofactor. It offers more useful structural or beauty-support depth while retaining reasonable value compared with the original's lightly dosed collagen.
73 Value

Collagen 1500 + C

Mason Natural
Hydrolyzed bovine collagen, vitamin C, and biotin form a focused beauty formula, but the collagen amount is modest compared with stronger gram-level products. It offers more useful structural or beauty-support depth while retaining reasonable value compared with the original's lightly dosed collagen.
68 Value

Alive! Hair Skin & Nails Gummies Delicious Strawberry Flavored

Nature's Way
Vitamin C, biotin, and zinc support hair and nail nutrition, but the collagen and silica amounts are small for structural support. It offers more useful structural or beauty-support depth while retaining reasonable value compared with the original's lightly dosed collagen.
Report alternatives

Sources

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

  1. 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
  2. Anti-pollution cosmetic-based one-step formation of w/o/w multiple emulsion containing D-biotin for skin protection: fabrication and in vitro and in vivo evaluation.
    Ali A; Iqbal S; Ilyas A; Khan H; Asad MHHB; Fatima N; Akhtar N · Drug delivery and translational research · 2020
    Non-randomized trial15 participantsSkin Health forBiotin
  3. Interventions for infantile seborrhoeic dermatitis (including cradle cap).
    Victoire A; Magin P; Coughlan J; van Driel ML · The Cochrane database of systematic reviews · 2019
    Systematic review35 participants2 studies pooledSkin Health forBiotin
  4. A randomized, double-blind, placebo-controlled study of a novel pantothenic Acid-based dietary supplement in subjects with mild to moderate facial acne.
    Yang M; Moclair B; Hatcher V; Kaminetsky J; Mekas M; Chapas A; Capodice J · Dermatology and therapy · 2014
    Randomized trial48 participantsSkin Health forVitamin B5
  5. Dexpanthenol enhances skin barrier repair and reduces inflammation after sodium lauryl sulphate-induced irritation.
    Proksch E; Nissen HP · The Journal of dermatological treatment · 2009
    Randomized trialSkin Health forVitamin B5
  6. Panthenol Allergic Contact Dermatitis: Sources of Exposure, Reported Cases, and a Call for More Frequent Testing.
    Weber B; Hylwa S · Dermatitis : contact, atopic, occupational, drug · 2025
    Narrative reviewSkin Health forVitamin B5
  7. 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
  8. 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
  9. Efficacy and Safety of Topical or Oral Hydrolyzed Collagen in Women with Dermatoporosis: A Randomized, Double-Blind, Factorial Design Study.
    Guadanhim LRS; Miot HA; Soares JLM; Silva SAM; Leonardi GR; Lopes RD; Bagatin E · Dermatology and therapy · 2023
    Randomized trial56 participantsSkin Health forCollagen
  10. 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 Skin Health forBiotin
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. Management of hair loss associated with endocrine therapy in patients with breast cancer: an overview.
    Karatas F; Sahin S; Sever AR; Altundag K · SpringerPlus · 2016
    Narrative reviewHair Health forVitamin C
  18. Elucidating causal relationships of diet-derived circulating antioxidants and the risk of non-scarring alopecia: A Mendelian randomization study.
    Ba Y; Shen L; Peng X; Zhang Y; Wang J · Medicine · 2024
    Methods validation study201,019 participantsHair Health forVitamin C
  19. Alterations of plasma antioxidants and mitochondrial DNA mutation in hair follicles of smokers.
    Liu CS; Chen HW; Lii CK; Tsai CS; Kuo CL; Wei YH · Environmental and molecular mutagenesis · 2002
    Observational studyHair Health forVitamin C
  20. Removal of synthetic hair dye using formamidine sulfinic acid and other sulfinate precursors.
    Hawkes JA; Lewis DM; Mama J; Murray J · International journal of cosmetic science · 2026
    Methods validation studyHair Health forVitamin C
  21. A Zinc Sulphate-Resistant Acrodermatitis Enteropathica Patient with a Novel Mutation in SLC39A4 Gene.
    Kilic M; Taskesen M; Coskun T; Gürakan F; Tokatli A; Sivri HS; Dursun A; Schmitt S; Küry S · JIMD reports · 2013
    Case reportHair Health forVitamin C
  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. 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 participantsSkin Health forCollagen
  25. 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
  26. 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 pooledSkin Health forCollagen
  27. Evaluation of the anti-wrinkle effect of an ascorbic acid-loaded dissolving microneedle patch via a double-blind, placebo-controlled clinical study.
    Lee C; Yang H; Kim S; Kim M; Kang H; Kim N; An S; Koh J; Jung H · International journal of cosmetic science · 2017
    Randomized trial23 participantsSkin Health forVitamin C
  28. Comparative Study on the Outcome of Periorbital Wrinkles Treated with Laser-Assisted Delivery of Vitamin C or Vitamin C Plus Growth Factors: A Randomized, Double-blind, Clinical Trial.
    Machado BHB; Frame J; Zhang J; Najlah M · Aesthetic plastic surgery · 2021
    Randomized trial149 participantsSkin Health forVitamin C
  29. Randomized trial of topical ascorbic acid in DMSO versus imiquimod for the treatment of basal cell carcinoma.
    Burke B; Bailie JE · Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2022
    Randomized trial25 participantsSkin Health forVitamin C
  30. Vitamin C improves healing of foot ulcers: a randomised, double-blind, placebo-controlled trial.
    Gunton JE; Girgis CM; Lau T; Vicaretti M; Begg L; Flood V · The British journal of nutrition · 2022
    Randomized trial16 participantsSkin Health forVitamin C
  31. Dietary nutrient intakes and skin-aging appearance among middle-aged American women.
    Cosgrove MC; Franco OH; Granger SP; Murray PG; Mayes AE · The American journal of clinical nutrition · 2007
    Cross-sectional study4,025 participantsSkin Health forVitamin C