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Solgar Skin Nails Hair Formula vs Known Nutrition Biotin for Hair

Side-by-side comparison of scores, ingredients, prices and real customer feedback for Solgar Skin Nails Hair Formula and Known Nutrition Biotin for Hair.

Last verified: 13 Mar 2026 · Based on 79 reviews

Our Verdict: Solgar Skin Nails Hair Formula or Known Nutrition Biotin for Hair?

Solgar's Skin, Nails and Hair Formula scores 79/100 versus 75/100 for Known Nutrition Biotin Vegan Gummies for Hair, with better ingredient quality (85 vs 64). Choose Known Nutrition if large tablets are difficult to swallow, though lower quality, higher sugar content, and potential lab test interference are significant drawbacks.

— AIScored Editorial Team

79.0
Score Summary

Solgar Skin Nails Hair Formula scores 79.0/100 vs Known Nutrition Biotin for Hair at 75/100. Solgar Skin Nails Hair Formula wins on effectiveness, ingredient quality, value for money. Known Nutrition Biotin for Hair is stronger on certifications.

Solgar Skin Nails Hair Formula vs Known Nutrition Biotin for Hair: What Does the Data Say?

Solgar Skin Nails and Hair Formula scores 79.0/100 overall while Known Nutrition Biotin Vegan Gummies scores 75/100. The Solgar product wins on effectiveness at 82.0/100 against 71.0/100 and on ingredient quality at 85.0/100 versus 64.0/100. It also edges value for money with 70.0/100 compared to 65.0/100. Solgar uses zinc citrate copper bisglycinate and 1000mg MSM in large tablets. Known Nutrition delivers 10000µg D-Biotin in a gummy form that relies on glucose syrup and sucrose as the top ingredients.

People dealing with brittle peeling or slow-growing nails should pick the Solgar Skin Nails and Hair Formula because it shows the strongest results there with reduced breakage and faster growth after four to eight weeks. Those who hate swallowing tablets and want a chewable option for hair thinning or shedding will prefer the Known Nutrition Biotin Vegan Gummies. Budget buyers get a cheaper choice at £10.39 instead of £13.90 though the higher-scoring Solgar formula still gives better returns.

Practical points matter too. The Solgar tablets come notably large and many users find them hard to swallow. The gummies taste sweet from the sugar load yet avoid any pill size issues. Both suit adults seeking vegan support from established brands but the Solgar version needs patience while the gummies carry a warning about high-dose biotin interfering with certain lab tests.

How Do the Scores Compare?

Skin, Nails and Hair Formul...
Biotin Vegan Gummies for Hair
Skin, Nails and Hair Formula 60 Tablets
Skin, Nails and Hair Formul...
Solgar
Biotin Vegan Gummies for Hair
Biotin Vegan Gummies for Hair
Known Nutrition
Overall Score 79.0 75
Effectiveness 82.0/100
Best
71.0/100
Ingredient Quality 85.0/100
Best
64.0/100
Value for Money 70.0/100
Best
65.0/100
Side Effects 87.0/100
Best
81.0/100
Certifications 50.0/100 100/100
Best
Best Price £12.87 Amazon UK → £10.39 Known Nutrition →
Cheapest
Price per Serving £0.21 60 servings N/A
Form Tablet gummies
Dose None None
Third-Party Tested ✗ No ✓ Yes
Reviews Analysed 66 13

Skin, Nails and Hair Formula 60 Tablets

Pros

  • Strongest and most consistent user outcome: significantly reduced nail breakage and faster nail growth
  • High-quality mineral forms — zinc citrate and copper bisglycinate for superior bioavailability
  • MSM at a meaningful 1000mg dose, supported by research for connective tissue, skin hydration, and keratin support
  • Vegan, free from gluten, dairy, soya, sugar, and starch — broad dietary compatibility

Cons

  • Tablets are notably large — repeatedly flagged by multiple reviewers as difficult to swallow, especially for sensitive users
  • Results require patience — noticeable improvements typically take 4–8 weeks of consistent use
  • L-proline and L-lysine doses (50mg each) are modest compared to standalone collagen peptide formulas
  • Not third-party tested — no independent certification for purity or label accuracy

Best For

Women experiencing postpartum hair thinning or shedding Adults with brittle, peeling, or slow-growing nails Those seeking a vegan beauty supplement from a trusted, established brand Long-term users wanting sustained structural support for hair, skin, and nails Anyone with common allergen sensitivities (gluten, dairy, soya)
View full review →

Biotin Vegan Gummies for Hair

Pros

  • Strong user-reported outcomes: multiple reviewers independently note visibly thicker, faster-growing hair
  • 10,000µg D-Biotin per serving — high-dose, bioavailable active form
  • BRC, GMP, and ISO certified with independent third-party testing — above average for UK gummy market
  • Vegan, free from artificial colours/flavours, preservatives, and GMO ingredients

Cons

  • Glucose syrup and sucrose are the first two listed ingredients — notable sugar load per daily serving
  • High-dose biotin (≥5,000µg) can interfere with immunoassay lab tests (thyroid, troponin) — users should inform clinicians before bloodwork
  • Limited clinical evidence for effect in biotin-sufficient individuals; one reviewer reports no results after two months
  • Gummy format typically carries a higher cost-per-dose than equivalent capsule supplements

Best For

Women experiencing hair thinning or increased shedding Perimenopausal or menopausal women with hair texture changes Those who dislike swallowing capsules and prefer a chewable format Vegans and vegetarians seeking a certified cruelty-free hair supplement People with colour-treated or heat-damaged hair seeking supportive supplementation
View full review →

Score Breakdown: Solgar Skin Nails Hair Formula vs Known Nutrition Biotin for Hair

Solgar Skin Nails Hair Formula Winner 79.0/100

Solgar's Skin, Nails & Hair Advanced MSM Formula is a well-established vegan tablet combining 1000mg MSM, vitamin C, zinc, copper, silicon from red algae, and the collagen precursor amino acids L-proline and L-lysine.

Effectiveness
Skin, Nails and ..
82.0/100
Biotin Vegan Gum..
71.0/100
Ingredient Quality
Skin, Nails and ..
85.0/100
Biotin Vegan Gum..
64.0/100
Value for Money
Skin, Nails and ..
70.0/100
Biotin Vegan Gum..
65.0/100
Side Effects
Skin, Nails and ..
87.0/100
Biotin Vegan Gum..
81.0/100
Certifications
Skin, Nails and ..
50.0/100
Biotin Vegan Gum..
100/100

What are the key differences?

Solgar Skin Nails Hair Formula is best for: Women experiencing postpartum hair thinning or shedding, Adults with brittle, peeling, or slow-growing nails
Known Nutrition Biotin for Hair is best for: Women experiencing hair thinning or increased shedding, Perimenopausal or menopausal women with hair texture changes

Frequently Asked Questions

Which is better, Solgar Skin Nails Hair Formula or Known Nutrition Biotin for Hair?
Solgar's Skin, Nails and Hair Formula scores 79/100 versus 75/100 for Known Nutrition Biotin Vegan Gummies for Hair, with better ingredient quality (85 vs 64). Choose Known Nutrition if large tablets are difficult to swallow, though lower quality, higher sugar content, and potential lab test interference are significant drawbacks. Solgar Skin Nails Hair Formula scores 79.0/100 overall while Known Nutrition Biotin for Hair scores 75/100. Solgar Skin Nails Hair Formula comes out ahead, scoring higher on effectiveness (82.0 vs 71.0). Solgar Skin Nails Hair Formula is best suited for Women experiencing postpartum hair thinning or shedding and Adults with brittle, peeling, or slow-growing nails. Known Nutrition Biotin for Hair is better for Women experiencing hair thinning or increased shedding and Perimenopausal or menopausal women with hair texture changes.
Is Solgar Skin Nails Hair Formula worth the price compared to Known Nutrition Biotin for Hair?
Solgar Skin Nails Hair Formula costs £12.87 while Known Nutrition Biotin for Hair is £10.39. For value, Solgar Skin Nails Hair Formula scores 70.0/100 vs Known Nutrition Biotin for Hair's 65.0/100. Solgar Skin Nails Hair Formula delivers better value relative to its quality. Note that Solgar Skin Nails Hair Formula comes as tablet while Known Nutrition Biotin for Hair is gummies, which may affect your preference.
Which has fewer side effects?
Solgar Skin Nails Hair Formula scores 87.0/100 for side effects (higher means fewer reported issues) while Known Nutrition Biotin for Hair scores 81.0/100. Reviewers report fewer side effects with Solgar Skin Nails Hair Formula. For certification and testing, Solgar Skin Nails Hair Formula scores 50.0/100 vs Known Nutrition Biotin for Hair's 100/100. Always consult a healthcare professional before starting any supplement.

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Disclaimer: AIScored provides data-driven comparisons based on publicly available reviews. This is not medical advice. Affiliate links may earn us a commission at no extra cost to you.

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