Head to head · Hair, Skin & Nails
ESTHER FORMULA Liposomal Glutathione Direct Strips vs OLLY Undeniable Beauty
OLLY scores higher overall (6.8 vs 4.9 out of 10) and leads on all five factors we score.
Updated October 2026 from our full reviews · How we score
Lemon oral strips with 80 mg of glutathione each; easy to take, but studies used 250 mg a day or more and the skin evidence is thin.
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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.
We may earn a commission when you buy through these links — it never affects our scores. How we make money
We may earn a commission when you buy through these links — it never affects our scores. How we make money
The short answer
Choose ESTHER FORMULA if…
- People who dislike swallowing pills
- K-beauty fans who want a convenient antioxidant habit
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 efficacy, quality & purity, value, experience, transparency
Side by side
| Liposomal Glutathione Direct Strips | Undeniable Beauty | |
|---|---|---|
| Our score | 4.9 / 10 | 6.8 / 10 |
| Efficacy (30%) | 4.0 | 4.7 |
| Quality & Purity (25%) | 6.3 | 8.3 |
| Value (20%) | 3.2 | 6.8 |
| Experience (15%) | 7.0 | 8.0 |
| Transparency (10%) | 4.5 | 8.0 |
| Form | Tablet | Gummy |
| Serving | 1 Strip(0.28g)30 servings per container | 2 gummies30 servings per container |
| Price per serving | $1.23 | See retailer |
| Testing & certifications | Third-party tested | NSF Contents Certified |
| Dietary | Vegan, Sugar-free, Gluten-free, Non-GMO | Gluten-free |
| Key ingredients |
|
|
| Flavors | 1 (Lemon) | 1 (Grapefruit Glam) |
| Creator video reviews | 3 | 4 |
Pros and cons
Liposomal Glutathione Direct Strips
- Fully disclosed amounts with no proprietary blend
- Pleasant sour-lemon strip that dissolves without water
- Made in the company's own California facility
- Oral glutathione raised blood levels in a six-month trial at 250 to 1,000 mg a day
- Individually sealed strips are easy to carry
- 80 mg per strip is well below the 250 to 1,000 mg a day used in studies
- About $1.23 a strip, or roughly $3.70 a day to reach a studied dose
- Absorption and brightening claims rest on small, company-affiliated data with inconsistent figures
- Contains FD&C Yellow No. 6 despite an "additive free" badge
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
Liposomal Glutathione Direct Strips
These strips are a pleasant, no-water way to take glutathione, made in the US with a fully disclosed formula. But one strip supplies about a third of the lowest dose studied, the skin-brightening evidence is modest, and reaching a studied dose costs about $3.70 a day. The marketing runs well ahead of the evidence, so buy it for convenience rather than promised results.
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 ESTHER FORMULA better than OLLY?
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