🟢 90/100

This product looks safe

  • Contains proprietary blend — exact ingredient amounts not disclosed
  • 29% of ingredients have research evidence
B Label Compliance Grade

Product Label

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Safety Alerts

ℹ️ Contains proprietary blend — exact ingredient amounts not disclosed

Label Data

2 Capsule(s) Serving Size
30 Servings
Other Combinations Product Type
29% Evidence Coverage

Supplement Facts — Evidence Check

Total Calories
5 Calorie(s)
Vitamin C
100 mg (166.66% DV)
1000 IU (250% DV)
✅ 1.7× RDA — within safe limits 📚 604 studies (Tier A: 16, B: 251)
RDA 0.015mg This product: 0.025mg UL 0.1mg
25 mg (250% DV)
📊 5.0× RDA — above typical dose 📚 1 studies — no high-quality reviews
RDA 5mg This product: 25mg
10000 mcg (3333.2% DV)
📊 333.3× RDA — above typical dose 📚 26 studies (Tier A: 0, B: 11)
RDA 0.03mg This product: 10.0mg
Cynatine HNS
500 mg
Proprietary Blend
216 mg

Other Ingredients

Magnesium Stearate Gelatin

Label Claims — Verification

Nutrient
All Other
Structure/Function
All Other (99% of products) Structure/Function (83% of products) Nutrient (54% of products)

Target Groups

Adult (18 - 50 Years) Gluten Free

Product Information

📋 Directions for Use

Suggested Use: Take two (2) capsules daily.

⚠️ Warnings & Precautions

Warning: Keep out of reach of children

If you are pregnant, nursing, or have a medical condition, consult your physician before use.

🧪 Formulation Notes

Joyce's ultimate hair strength is the scientifically backed solution for strong lustrous, healthy hair, beautiful vibrant skin, and healthy nails, in addition to collagen and biotin.

Ultimate hair strength contains cynatine HNS which has been clinically shown to improve hair strength, enhance hair volume and increase shine. Ultimate Hair strength also contains Joyce's Pure4 blend of the world's best oils which combine to provide a rich source of vitamins, antioxidants and fatty acids, straight from mother nature.

Does not contain: soy, wheat, lactose, starch, yeast, GMO's or artificial flavors. Gluten Free

Manufactured in the U.S.A. (Made with the finest imported and domestic ingredients) Miracle Elixir Collections Clinically tested to: Reduce hair loss due to everyday activities Enhance hair volume Promote hair strength and hair growth Support healthy skin & nails

Non GMO & Gluten Free

Manufactured in the USA

Additional Information

Because Beauty is in you.

Studies show reduced hair loss from everyday activities can be seen within 30-60 days.

GMP Certified

Product Details

UPC / SKU 0 711237 970423
DSLD Entry Date 2023-04-21
Product Type Other Combinations
Form Capsule
Brand Joyce Giraud
DSLD ID 271681
Data Updated 2026-04-11

Research Evidence

371 Research Sources
54 Avg Quality Score
148 Meta Analysis
82 Systematic Review
71 Rct
62 Clinical Trial
2 Regulatory Source
1 Cochrane Review
1 Narrative Review
1 Other
1 Openfda Safety
A Vitamin C supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024
A Does Vitamin C Supplementation Provide a Protective Effect in Periodontal Health? A Systematic Review and Meta-Analysis
Meta Analysis International journal of molecular sciences 2024
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021
View all evidence for Vitamin C →

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