Head to head · Hair, Skin & Nails
MaryRuth's Liquid Morning Multivitamin + Hair Growth vs OLLY Undeniable Beauty
OLLY scores higher overall (6.8 vs 6.5 out of 10), mainly on quality & purity, value, experience and transparency. MaryRuth's still leads on efficacy.
Updated October 2026 from our full reviews · How we score
MaryRuth's viral liquid multi uses Lustriva at the dose that thickened hair in a trial, but 10,000 mcg of biotin can skew lab tests and it costs $2.50 a day.
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An NSF-certified grapefruit gummy with 2,500 mcg biotin, 50 mg keratin and vitamins C and E: well made and well liked, but backed by weak hair-and-nail evidence.
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We may earn a commission when you buy through these links — it never affects our scores. How we make money
The short answer
Choose MaryRuth's if…
- Women with thinning hair who want one daily liquid
- People who dislike swallowing pills
- Vegan, gluten-free and sugar-free diets
- You care most about efficacy
Choose OLLY if…
- Shoppers who want an independently certified beauty gummy
- People who prefer a tasty chewable over pills
- Nail-focused users willing to run a two-to-three-month trial
- You care most about quality & purity, value, experience, transparency
Side by side
| Liquid Morning Multivitamin + Hair Growth | Undeniable Beauty | |
|---|---|---|
| Our score | 6.5 / 10 | 6.8 / 10 |
| Efficacy (30%) | 6.8 | 4.7 |
| Quality & Purity (25%) | 7.2 | 8.3 |
| Value (20%) | 5.2 | 6.8 |
| Experience (15%) | 7.2 | 8.0 |
| Transparency (10%) | 5.8 | 8.0 |
| Form | Liquid | Gummy |
| Serving | 2 Tbsp (30 mL)30 servings per container | 2 gummies30 servings per container |
| Price per serving | $2.50 | See retailer |
| Testing & certifications | Clean Label ProjectcGMP facility | NSF Contents Certified |
| Dietary | Vegan, Dairy-free, Gluten-free, Soy-free, Sugar-free | Gluten-free |
| Key ingredients |
|
|
| Flavors | 2 (Peach Mango, Dragon Fruit Melon) | 1 (Grapefruit Glam) |
| Creator video reviews | 5 | 4 |
Pros and cons
Liquid Morning Multivitamin + Hair Growth
- Provides Lustriva at about the 160 mg daily dose that improved hair thickness in a placebo-controlled trial
- Clean Label Project certified and made in a GMP facility
- Liquid format with methylfolate and methylcobalamin, so no pills to swallow
- Sugar-free, vegan, and free of dairy, gluten and soy
- Most buyers enjoy the Peach Mango flavor
- 10,000 mcg of biotin (33,333% DV) can distort lab tests, including troponin tests for heart attacks
- The hair evidence rests on one 12-week trial of the ingredient, not of this product
- About $2.50 a day, and it lacks iron, iodine, calcium and magnesium
- 1,000 mcg of chromium is far above the Daily Value, and some buyers report stomach upset
Undeniable Beauty
- Certified to NSF/ANSI 173, so label contents are verified and contaminants screened
- Fully disclosed label, including the 50 mg keratin dose
- Natural-source vitamin E and no synthetic flavors or colors
- 4.5-star average across 14,000+ buyer ratings, with frequent praise for the taste
- Biotin at 8,333% DV has little evidence of benefit unless you are deficient
- Keratin dose is one-tenth of the 500 mg used in a published solubilized-keratin trial
- Costs more than twice as much per day as Nature's Bounty's similar biotin gummy
- Contains gelatin and 2 g of added sugar; some buyers report breakouts
Our verdicts
Liquid Morning Multivitamin + Hair Growth
This is one of the few viral hair supplements that uses its headline ingredient at the dose that worked in a trial, and Clean Label Project certification adds confidence. The trade-offs are real: the evidence is one ingredient study, the 10,000 mcg of biotin can skew blood tests, and $2.50 a day is steep for a multivitamin missing key minerals. Women who want one tasty liquid for hair and daily vitamins may find a three-month trial worthwhile, but anyone with upcoming lab work or a tight budget should look elsewhere.
Full review
Undeniable Beauty
Undeniable Beauty is one of the better-made beauty gummies: NSF certified, fully disclosed and widely liked for its taste. But it relies on the same high-dose biotin as cheaper rivals, and its 50 mg of keratin is a fraction of the studied amount. Think of it as a pleasant daily habit, not a fix for thinning hair.
Full review
What creators say
Questions people ask
Is MaryRuth's better than OLLY?
Are MaryRuth's and OLLY third-party tested?
Who should choose MaryRuth's over OLLY?
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