Science and research are at the core of Hr². We develop our formula with leading scientists and partners from research and clinical practice to build evidence-based products with robust quality standards.
Ingredients
Evidence-based ingredient selection
We select ingredients based on available human studies and clear biological plausibility. Only raw materials with clear identity, defined composition, and an appropriate safety profile are considered.
Dosage based on studies and active compounds
Daily dosage is aligned with levels used in clinical studies and standardized active compound content — not just raw material weight. This ensures that relevant active amounts remain available in stable form throughout the shelf life.
Research Results
The ingredients in Hr² contribute to improving key nutrient levels within 3 months.a
PLACEBO
HR²
Ingredients in the Literature
| Title | Publication, Date |
|---|---|
| Short communication: Clinical evaluation of pea sprout extract in the treatment of hair loss | PMC · Phytotherapy Research · 2020 |
| Natural Hair Supplement: Friend or Foe? Saw Palmetto, a Systematic Review in Alopecia | PubMed · 2020 |
| The Safety and Efficacy of a Proprietary Bioactive Fatty Acids Extract From Saw Palmetto (Serenoa repens) for Promoting Hair Growth and Reducing Hair Loss in Adults With Self‑Perceived Thinning Hair: 90‑Day Results | PMC |
| Effects of Tocotrienol Supplementation on Hair Growth in Human Volunteers | PMC · Tropical Life Sciences Research |
| L‑Cystine‑Containing Hair‑Growth Formulation Supports Protection, Viability, and Proliferation of Keratinocytes | PMC |
| Screening of hair growth promoting activity of Punica granatum L. (pomegranate) leaves extracts and its potential to exhibit antidandruff and anti‑lice effect | PMC |
| Effects of Withania somnifera root extract serum application on hair health in healthy adults: A prospective, double‑blind, randomized, parallel, placebo‑controlled study | PMC |
| Paradise Nut Paradox: Alopecia Due to Selenosis from a Nutritional Therapy | PMC |
| The Role of Vitamins and Minerals in Hair Loss: A Review | PMC |
| Vitamin A in Skin and Hair: An Update | PMC |
| Vitamin D and alopecia areata: possible roles in pathogenesis and potential implications for therapy | PMC |
| Nutritional factors and hair loss | PubMed |
| Analysis of Serum Zinc and Copper Concentrations in Hair Loss | PMC |
| Comparing the Efficacy of Combined Intralesional Triamcinolone Acetonide With Topical Calcipotriol Versus Intralesional Triamcinolone Acetonide Monotherapy in Scalp and Beard Alopecia Areata: Results From a Randomized Single‑Blinded Clinical Trial | PubMed |
| Dietary supplement increases anagen hair rate in… : Therapy | Ovid · DOI: 10.2217/14750708.4.1.59 |
| Annals of Dermatology article (DOI: 10.5021/ad.2009.21.2.142) | Annals of Dermatology · v.21(2) · May 2009 |
| Hair loss and thyroid disorders | British Thyroid Foundation |
Testing
Our Testing
Plus in-house microbiological analysis of every production batch.
Naturally clean in taste — without added sugar or hidden sugar substitutes.
Formulated to be 100% gluten-free — for optimal compatibility and ease in everyday life.
Free from milk and lactose — for gentle digestion and optimal compatibility, even for sensitive individuals.
Safe for people with allergies — with a formula completely free from nuts and nut products.
Every color comes from nature — completely free from synthetic dyes or coatings.
All raw materials are carefully tested and guaranteed to be residue-free and pure.