One pharmaceutical active. Decades of clinical research for skin fold conditions.
Undecylenic acid, zinc oxide and witch hazel have been used in dermatology and pharmaceutical skincare for decades — trusted by clinicians and formulators long before the skincare aisle existed, and long before anyone was selling greasy creams that trap moisture and make skin folds worse.
We built the FoldGuard System™ around them because they have stood the test of time, and because we could trace exactly where they come from, how they work, and why they earned their place.
The pharmaceutical actives the skin fold aisle forgot.
"The most-studied pharmaceutical anti-fungal for skin fold conditions used in clinical dermatology for decades targeting the one thing every other cream skips: the fungus and bacteria actually causing the rash."
— JAGAN, NURVIO CEO
Undecylenic Acid 10%
The history. Undecylenic acid has been used in pharmaceutical antifungal preparations since the mid-20th century. Derived from castor oil, it was one of the first clinically recognised treatments for fungal skin conditions and remains an FDA-recognised antifungal active. It has been the pharmaceutical standard for superficial fungal infections — athlete's foot, ringworm, skin fold candidiasis — for over seventy years.
The science. Its mechanism is well-documented. Undecylenic acid disrupts the cell membrane of Candida yeast, prevents Candida from transforming from its harmless form into its invasive hyphal form, and controls the odour-producing bacterial overgrowth that accompanies skin fold rash. At 10% concentration — the clinical standard — it penetrates the fold and works at the cellular level. In the FoldGuard System™, undecylenic acid is the primary antifungal active, present at the full pharmaceutical dose printed on the label.*
Sources (real anchors — finalise before publishing):
1. FDA monograph on undecylenic acid as an OTC antifungal active — recognised for superficial fungal infections.
2. Candida hyphal transformation inhibition — peer-reviewed mechanism literature.
† These statements have not been evaluated by the FDA. Individual results may vary.
Your dermatologist didn't need a wellness trend to tell her this worked.
Zinc oxide and witch hazel have been trusted in clinical skincare for over a century — for barrier protection, inflammation, wound healing, and drying weeping skin. Not because of a subscription box or a social post. Because they worked then — and they work now.
Zinc Oxide 15% & Witch Hazel Distillate
The history. Zinc oxide has been used in wound care and barrier protection for over three thousand years — documented in ancient Egyptian, Greek and Ayurvedic traditions. Witch hazel has been used since Native American medicine as an astringent for inflamed, weeping skin — trusted by French and English medical traditions specifically for swollen, irritated, wet tissue.
The science. Zinc oxide at 15% creates an immediate physical barrier that stops burning on contact and supports skin repair. Witch hazel tightens the skin surface, reduces weeping, and corrects the pH imbalance that allows fungal overgrowth to persist. In the FoldGuard System™, zinc oxide stops the burning while witch hazel dries the fold — with undecylenic acid killing the fungus underneath.*
Sources (real anchors — finalise before publishing):
1. Zinc oxide wound healing and barrier function — peer-reviewed dermatology literature.
2. Hamamelis virginiana astringent and anti-inflammatory properties — clinical review literature.
† These statements have not been evaluated by the FDA. Individual results may vary.