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Science & Standards

Proof, not promises.

Every result we show comes from a published or supplier study of a named ingredient, with the study design printed right next to it. Here it is, all in one place.

Credited to the ingredient

The numbers below come from studies of the ingredients in our formulas, not of a Rafael product. We name the ingredient every time.

The design, always shown

How many people, how long, placebo or not, and who funded it when we know. Small or open-label studies are labelled as such.

Honest timelines

Hair grows about a centimeter a month, so we talk in 90-day cycles, never overnight results. We do not use words like cure or regrow.

The studied actives

What the research shows

The headline result for each studied ingredient, with the study behind it.

Hair

Hair Growth Serum

46%increase in the ratio of growing to resting hairs with Capixyl™ at 5%, vs a 33% drop with placebo
67%of participants using Procapil™ at 3% improved their ratio of growing to resting hairs
17%fewer resting-phase hairs in 84 days with Redensyl™ at 3%
  • Placebo-controlled study by Lucas Meyer Cosmetics: 30 men with thinning hair (15 Capixyl™ 5%, 15 placebo), daily application, digital trichogram at 4 months.
  • Placebo-controlled study by Sederma: 35 men (18 Procapil™ 3%, 17 placebo), twice-daily application for 4 months.
  • Double-blind study by Givaudan: 26 men (half on placebo), once-daily application of 3% Redensyl™, phototrichogram at 84 days vs baseline.
Beauty Within

Biotin Beauty Gummies

34%less daily hair shedding after 4 weeks with AnaGain™ Nu, 100 mg a day*
  • Pilot study without placebo: 21 adults taking 100 mg AnaGain™ Nu daily, daily hair counts vs baseline (Grothe et al., Phytotherapy Research, 2020).
Beauty Within

Hair·Skin·Nails Gummies

47%less hair shedding after 90 days with Cynatine® HNS*
87.5%saw nails less prone to breaking, vs 28.5% on placebo*
  • Double-blind, placebo-controlled study of 50 women aged 40 to 71 taking 500 mg Cynatine® HNS keratin with vitamins and minerals daily for 90 days; hair-pull test vs baseline (34% better than placebo). Funded by the ingredient supplier (Beer et al., Scientific World Journal, 2014).
Beauty Within

Collagen Gummies

20%less eye wrinkle volume vs placebo in 8 weeks with VERISOL® collagen peptides*
42%fewer broken nails after 24 weeks with VERISOL®*
12%faster nail growth after 24 weeks with VERISOL®*
  • Double-blind, placebo-controlled study of 114 women aged 45 to 65 taking 2.5 g VERISOL® daily for 8 weeks (Proksch et al., Skin Pharmacology and Physiology, 2014).
  • Open-label study without placebo, 25 women taking 2.5 g VERISOL® daily for 24 weeks (Hexsel et al., Journal of Cosmetic Dermatology, 2017).
Beauty Within

Collagen Glow

20%less eye wrinkle volume vs placebo in 8 weeks with VERISOL® collagen peptides*
42%fewer broken nails after 24 weeks with VERISOL®*
  • Double-blind, placebo-controlled study of 114 women aged 45 to 65 taking 2.5 g VERISOL® daily for 8 weeks (Proksch et al., Skin Pharmacology and Physiology, 2014).
  • Open-label study without placebo, 25 women taking 2.5 g VERISOL® daily for 24 weeks (Hexsel et al., Journal of Cosmetic Dermatology, 2017).
Skin

Daily Face Cream

59%saw improvement in dark spots in 12 weeks with bakuchiol 0.5%, vs 44% with retinol
Retinol-levelresults for the look of wrinkles with bakuchiol, with less dryness and stinging
  • Independent randomized, double-blind study of 44 adults, bakuchiol 0.5% twice daily vs retinol 0.5% daily for 12 weeks (Dhaliwal et al., British Journal of Dermatology, 2019; percentages per the British Association of Dermatologists).

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Our standards

What you can count on

The same promises on every product page, written down in one place.

Clean hair care

Our shampoo, conditioner, hair mask and serum are paraben-free and dye-free, safe for color-treated hair, and cruelty-free. The shampoo is sulfate-free.

Clean beauty gummies

Our Biotin, Hair·Skin·Nails and Collagen Gummies are non-GMO and gluten-free, with no water needed.

Never tested on animals

Not our products and not our formulas. Collagen comes from animal sources, so our collagen products are not vegan, and we say so.

Made in the USA

Every Rafael product is made in the USA. Our beauty gummies and collagen are made in an FDA-registered facility.

Full label, every time

Every supplement page shows the complete Supplement Facts, the daily amount and who should check with a doctor first.

If you are pregnant, nursing, taking medication or have a medical condition, please check with your doctor before use.