Known Nutrition Marine Liquid Collagen vs Known Nutrition Biotin for Hair

Pros

• ✓5000mg hydrolysed marine collagen at a clinically relevant dose, with liposomal delivery claimed to enhance absorption
• ✓Strong positive feedback on skin plumpness, fine line reduction, and hydration — multiple reviewers report results within 4 weeks
• ✓Hair thinning and dullness improvements noted, particularly by perimenopausal users
• ✓Synergistic formula: Vitamin C (cofactor for collagen synthesis), pine bark extract (antioxidant), bilberry, Vitamin E, and A

Cons

• ✗Redesigned sachet format widely criticised: leaking, difficult to fully empty, and inconvenient — drove two 1-star reviews from previously loyal customers
• ✗Price has increased while some reviewers feel pack size has decreased, reducing perceived value
• ✗One reviewer found the taste artificial; subjective but relevant given the liquid format
• ✗Short-term users (under 1 week) report no results yet, which is expected but may disappoint those seeking rapid outcomes

Best For

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