About Approved Science
Approved Science describes itself as an institute dedicated to improving individual health and well-being, selling a wide catalogue of targeted health products through its own online store. Its stated process is to research the clinical data on each ingredient, review the published benefits, and then formulate. The company says its products are made in an FDA-registered, cGMP-certified laboratory, and it backs every purchase with a 60-day money-back guarantee on opened and unopened bottles.
In our reviews, the product that stood out is Fungix Extra Strength Nail Serum. It combines 25 percent undecylenic acid with a botanical base the brand lists as tea tree, aloe vera, jojoba, lavender, manuka and vitamin E, applied with a brush to fingernails and toenails. In our testing of toenail treatments, it was a top pick for readers who want a long, daily course in a gentler, plant-based carrier. Like every topical in the category, it works over months of consistent use rather than days.
Brand website: approvedscience.com
What Approved Science makes
Approved Science's range runs wider than the products we review. The lines we know best from our own testing are marked with a star:
Fungix Nail Fungus Treatment
25% undecylenic acid with tea tree oil, aloe vera and vitamin E for fingernails and toenails — featured on BestRatedDocs
Nail Strengthener
a companion nail-health product in the brand's skin and nail range
Athlete's Foot
a foot-care product listed in the brand's catalogue
Eczema Balm
a topical skin-care product listed under the brand's skin health category
Wart Removal
a topical skin product listed in the brand's catalogue
Why we recognized Approved Science
The BestRatedDocs Top Brand recognition isn't paid for and can't be applied for. We award it to the brands whose products consistently stand out in our category reviews. Approved Science earned it on the strength of the products below, evaluated the same way every product on this site is: assessed against clinical criteria, verified specifications, and real-world user outcomes, and judged on merit.
Approved Science products we rated highly
Approved Science Fungix Extra Strength Nail Serum
In our reviews, Fungix pairs 25 percent undecylenic acid, an active in the FDA OTC antifungal monograph, with a botanical serum base of manuka, tea tree, lavender and jojoba. Its brush applicator reaches the nail folds, and the pleasant scent makes a daily routine easier to stick with across the 3 to 6 months a topical needs. It holds a 4.1-star average across roughly 2,000 Amazon reviews, and we note honestly that, like every OTC topical, it works best on mild, early involvement.
Read the 7 Best Toenail Fungus Treatments of 2026 guide →What earned Approved Science the recognition
- Fungix delivers 25 percent undecylenic acid, an antifungal active recognized in the FDA OTC monograph, in a botanical serum base rather than a harsh single-active liquid.
- The brand states that its products are made in an FDA-registered, cGMP-certified laboratory.
- Fungix earned a place in our toenail fungus review, where readers who value a gentler, long-course formula will find it one of our top picks.
- The brand backs purchases from its own store with a 60-day money-back guarantee.
- Fungix holds a 4.1-star average across roughly 2,000 Amazon reviews, with reviewers describing the new nail coming in clear over a consistent 3 to 6 month course.