$12.88 $0.42 per serving
Product analysis
Undeniable Beauty Grapefruit Glam centers on biotin for normal nail and hair nutrition, with limited support for improving brittle nails. Its unspecified keratin preparation makes it difficult to compare with preparations linked to hair or nail benefits.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality54
The biotin is clearly identified as the form the body uses. Keratin’s preparation is unspecified, while the quality of the other named vitamin forms remains uncertain.
Ingredient Transparency81
All listed amounts are stated, allowing serving comparisons. Several forms, including the keratin preparation, are missing.
Value For Money58
The labeled keratin serving has a favorable cost, while biotin offers moderate value within the formula. Value for the other contributions cannot be judged confidently.
Customer Satisfaction82
Customer feedback is positive across thousands of ratings. The broad review base supports confidence in satisfaction without proving hair or nail benefits.
Product Focus70
Nail nutrition is the clearest fit, with more conditional relevance to hair and skin. Benefits depend on nutritional need, and the keratin preparation cannot be assumed to match specific tested materials.
- Format
Gummy - Container
- 60 Gummy(ies)
- Per serving
- $0.42
- Customer rating
- 4.5 · 2,573 ratings
Goals
Impact
High effect
Biotin · 2500 mcgVitamin C · 15 mgKeratin · 50 mg
Biotin can help hair problems associated with deficiency and certain rare hair-shaft disorders, but routine regrowth in adults with adequate intake is not established. The selected serving reaches the saved biotin amount comparison. Solubilized keratin is also present at 50 mg, below the saved amount threshold, and is not established as equivalent to the specific hydrolysate used in hair-condition studies.
How this product is rated for Hair Health
Ingredient fit85
The included ingredients align with the saved hair comparison, while their clinical relevance depends on their specific roles. The counted amounts reach the saved comparison anchors; those anchors are not proven hair-growth doses.
Goal fit
The included ingredients align with the saved hair comparison, while their clinical relevance depends on their specific roles.
Dose adequacy
The counted amounts reach the saved comparison anchors; those anchors are not proven hair-growth doses.
Pathways0
No contribution was assigned to the four tracked hair mechanisms. None of the tracked mechanisms reaches the comparison threshold.
Depth
No contribution was assigned to the four tracked hair mechanisms.
Breadth
None of the tracked mechanisms reaches the comparison threshold.
Evidence80
Biotin has the strongest recognized contribution here; meaningful hair benefits remain limited to deficiency and rare hair-shaft disorders. The counted preparations meet the saved preparation comparison; this does not establish routine regrowth or superiority of the labeled forms.
Evidence strength
Biotin has the strongest recognized contribution here; meaningful hair benefits remain limited to deficiency and rare hair-shaft disorders.
Studied preparation
The counted preparations meet the saved preparation comparison; this does not establish routine regrowth or superiority of the labeled forms.
Formulation logic100
The counted ingredients have no missing required partners or identified configured conflicts. All counted ingredients meet the minimum amount comparison; this is not a guarantee of clinical hair benefit.
Partner coverage
No required partner is missing among counted ingredients; this does not demonstrate extra benefit from combining them.
Conflicts
No configured ingredient conflict was identified in the supplied calculation.
Effective doses
All counted ingredients meet the minimum amount comparison; this is not a guarantee of clinical hair benefit.
Impact
Highest effect
Biotin · 2500 mcgKeratin · 50 mg
Biotin has a limited connection to brittle-nail improvement from small, mostly uncontrolled studies using 2500 mcg daily over months. The serving matches that study amount, without establishing repeated daily use or duration. Keratin receives a limited connection here, but generic or solubilized material does not establish equivalence to the reviewed feather hydrolysate or combination formula.
How this product is rated for Nail Health
Ingredient fit87
Biotin supplies the main relevant connection. The counted ingredients contribute unevenly, with smaller amounts or preparation differences limiting the overall match.
Goal fit
The nail-related ingredients share the formula with ingredients serving broader nutritional goals.
Dose adequacy
The counted ingredients contribute unevenly, with smaller amounts or preparation differences limiting the overall match.
Pathways70
The strongest saved connection is keratinization cofactors. One pathway reaches the configured coverage threshold.
Depth
The strongest saved connection is keratinization cofactors.
Breadth
One pathway reaches the configured coverage threshold.
Evidence100
Vitamin B7 (Biotin) leads the saved evidence finding. Biotin findings come mainly from small uncontrolled nail studies.
Evidence strength
Vitamin B7 (Biotin) leads the saved evidence finding; the supplied nail-specific evidence remains limited.
Studied preparation
The saved finding recognizes the counted preparations, without proving the same nail response.
Formulation logic100
The counted ingredients have no unmet partner requirement, and no configured conflict was found. Passing the amount threshold does not prove clinical effectiveness.
Partner coverage
The counted ingredients work alone or have the partner required by the supplied configuration.
Conflicts
No configured ingredient conflict was found.
Effective doses
All counted ingredients pass the configured inclusion threshold; it is not a proven effective nail dose.
Impact
Moderate effect
Vitamin C · 15 mgVitamin E · 7.5 mg
Biotin contributes to normal skin nutrition, especially when intake is inadequate, but 2500 mcg does not imply extra benefit in someone with adequate status. Vitamin C supports normal collagen formation and vitamin E contributes to antioxidant defences; their small amounts provide a modest nutritional contribution. Oral keratin has limited support for the skin outcomes considered here.
How this product is rated for Skin Health
Ingredient fit96
The relevant ingredients are concentrated on the assessed goal, although the product is also linked to other uses. The assessed amounts align well with the saved dose comparisons.
Goal fit
The relevant ingredients are concentrated on the assessed goal, although the product is also linked to other uses.
Dose adequacy
The assessed amounts align well with the saved dose comparisons.
Pathways0
No direct skin structure, hydration, barrier or UV antioxidant pathway has a meaningful saved contribution. None of the assessed skin pathways reaches the saved threshold for substantial coverage.
Depth
No direct skin structure, hydration, barrier or UV antioxidant pathway has a meaningful saved contribution.
Breadth
None of the assessed skin pathways reaches the saved threshold for substantial coverage.
Evidence54
Vitamin B7 (Biotin) leads the saved evidence assessment among ingredients with sufficient assessed amounts. Evidence strength varies by ingredient and does not predict an individual benefit. The saved assessment identifies 1 ingredient preparations as matching its evidence criteria at sufficient assessed amounts.
Evidence strength
Vitamin B7 (Biotin) leads the saved evidence assessment among ingredients with sufficient assessed amounts. Evidence strength varies by ingredient and does not predict an individual benefit.
Studied preparation
The saved assessment identifies 1 ingredient preparations as matching its evidence criteria at sufficient assessed amounts.
Formulation logic100
The assessed ingredients can contribute on their own or have their required partner present. 1 of 1 assessed ingredients meet the saved minimum amount threshold.
Partner coverage
The assessed ingredients can contribute on their own or have their required partner present.
Conflicts
No ingredient conflict was identified in the saved assessment.
Effective doses
1 of 1 assessed ingredients meet the saved minimum amount threshold.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Calories | 15 Calorie(s) | |
Total Carbohydrates | 3 Gram(s) | |
Vitamin C (Ascorbic Acid) | 15 mg | |
Vitamin E (D-Alpha-Tocopheryl Acetate) | 7.5 mg | |
Biotin (D-Biotin) | 2500 mcg | |
Keratin | 50 mg |
Biotin (D-Biotin) · 2500 mcg OverallScore86
Keratin · 50 mg OverallScore42
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Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- 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.
- Low serum biotinidase activity in children with valproic acid monotherapy.
- Vitamins A, B, C, and D: A Short Review for the Dermatologist.
- The Infatuation With Biotin Supplementation: Is There Truth Behind Its Rising Popularity? A Comparative Analysis of Clinical Efficacy versus Social Popularity.
- 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.
- Halloysite/Keratin Nanocomposite for Human Hair Photoprotection Coating.
- Annurca Apple Nutraceutical Formulation Enhances Keratin Expression in a Human Model of Skin and Promotes Hair Growth and Tropism in a Randomized Clinical Trial.
- Keratin/alginate hybrid hydrogels filled with halloysite clay nanotubes for protective treatment of human hair.
- Patient Satisfaction and Adverse Effects Following the use of Topical Hair Fiber Fillers.
- Management of hair loss associated with endocrine therapy in patients with breast cancer: an overview.
- Elucidating causal relationships of diet-derived circulating antioxidants and the risk of non-scarring alopecia: A Mendelian randomization study.
- Alterations of plasma antioxidants and mitochondrial DNA mutation in hair follicles of smokers.
- Removal of synthetic hair dye using formamidine sulfinic acid and other sulfinate precursors.
- A Zinc Sulphate-Resistant Acrodermatitis Enteropathica Patient with a Novel Mutation in SLC39A4 Gene.
- Effects of tocotrienol supplementation on hair growth in human volunteers.
- Effects of dietary supplements on androgenetic alopecia: a systematic review and network meta-analysis.
- Evaluation of the Safety and Effectiveness of Nutritional Supplements for Treating Hair Loss: A Systematic Review.
- Biotin for the treatment of nail disease: what is the evidence?
- Treatment of brittle fingernails and onychoschizia with biotin: scanning electron microscopy.
- Treatment of brittle nail with a hydroxypropyl chitosan-based lacquer, alone or in combination with oral biotin: A randomized, assessor-blinded trial.