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Extra Strength Hair, Skin & Nails

product on market Softgel Capsule Spring Valley Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 62% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

This profile contains vitamins A, C, D3, E, and thiamine, which support cellular health and collagen synthesis. Research provides strong evidence for these nutrients in maintaining skin and nail integrity. However, the overall evidence coverage for this specific formulation is limited.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for Extra Strength Hair, Skin & Nails
Open Full PDF View on NIH DSLD →
Details

Label Data

3 Softgel(s)
Serving Size
40
Servings
Other Combinations
Product Type
62%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin A
5000 IU (100% DV)
Vitamin C
90 mg (150% DV)
2000 IU (500% DV)
3.3× RDA — above typical dose (UL: 0.1 mg) 608 studies (A:16, B:251)
30 IU (100% DV)
1.3× RDA — within safe limits 179 studies (A:3, B:90)
5 mg (333% DV)
4.2× RDA — above typical dose 76 studies (A:0, B:33)
5 mg (294% DV)
3.8× RDA — above typical dose 13 studies (A:0, B:1)
25 mg (125% DV)
1.8× RDA — within safe limits 196 studies (A:5, B:63)
5 mg (250% DV)
3.8× RDA — above typical dose (UL: 100 mg) 114 studies (A:3, B:35)
400 mcg (100% DV)
Within RDA (1.0× RDA) 226 studies (A:10, B:105)
8 mcg (133% DV)
3.3× RDA — above typical dose 139 studies (A:1, B:44)
5000 mcg (1667% DV)
166.7× RDA — above typical dose 27 studies (A:0, B:11)
15 mg (150% DV)
3.0× RDA — within safe limits 2 studies — no high-quality reviews
7.5 mg (50% DV)
Within RDA (0.7× RDA) 263 studies (A:6, B:134)
12.5 mcg (18% DV)
Within RDA (0.2× RDA) 173 studies (A:0, B:67)
Argan Oil
25 mg
10 mg
Market median: 500.0mg (9 products) 7 studies — no high-quality reviews
Horsetail
3 mg
Market median: 20.0mg (931 products) 234 studies (A:1, B:90)
Market median: 100.0mg (173 products)
30 mg
Market median: 108.0mg (8 products) 9 studies (A:0, B:4)
extra virgin organic Coconut Oil
50 mg

Other Ingredients

Soybean Oil Gelatin Vegetable Glycerin Soy Lecithin Contains Less Than 2%
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Use: Adults, take three softgels daily, preferably with a meal.

Warnings & Precautions

Contains coconut, soy and argan.

Warning: Pregnant or nursing women, individuals taking medication(s) or persons who have a health condition should consult their doctor before using this product.

Discontinue use and consult your doctor if any adverse reactions occur.

Avoid this product if you are allergic to yeast.

Not intended for use by persons under the age of 18. Keep out of reach of children.

Do not use if imprinted seal under cap is broken or missing.

Formulation Notes

5000 mcg Biotin per serving

Collagen support

With Argan Oil, Coconut Oil, and Collagen

Product of Canada, China, Germany, Malaysia, Morocco, Philippines, United States

Additional Information

Store at room temperature 59 degrees - 86 degrees F (15 degrees - 30 degrees C). Keep bottle tightly closed.

Quality guaranteed

Metadata

Product Details

UPC / SKU6 81131 12533 8
DSLD Entry Date2020-11-21
Product TypeOther Combinations
FormSoftgel Capsule
BrandSpring Valley
DSLD ID239836
Data Updated2026-04-11
Research

Research Evidence

337
Research Sources
54
Avg Quality
161
Meta Analysis
68
Systematic Review
51
Rct
48
Clinical Trial
2
Other
2
Regulatory Source
1
Narrative Review
1
Cochrane Review
1
Guideline
1
Openfda Safety
A Vitamin A supplementation for preventing morbidity and mortality in children from six months to five years of age
Meta Analysis The Cochrane database of systematic reviews 2017 PubMed DOI
A Vitamin A supplementation for the prevention of morbidity and mortality in infants six months of age or less
Meta Analysis The Cochrane database of systematic reviews 2011 PubMed DOI
A Vitamin A supplementation for reducing the risk of mother-to-child transmission of HIV infection
Meta Analysis The Cochrane database of systematic reviews 2011 PubMed DOI
A Vitamin A supplements for preventing mortality, illness, and blindness in children aged under 5: systematic review and meta-analysis
Meta Analysis BMJ (Clinical research ed.) 2011 PubMed DOI
A Fortification of staple foods with vitamin A for vitamin A deficiency
Systematic Review The Cochrane database of systematic reviews 2019 PubMed DOI
A Vitamin A supplementation for the prevention of morbidity and mortality in infants one to six months of age
Narrative Review The Cochrane database of systematic reviews 2016 PubMed DOI
A Vitamin A and fish oils for preventing the progression of retinitis pigmentosa
Meta Analysis The Cochrane database of systematic reviews 2020 PubMed DOI
A Exercise training-induced changes in exerkine concentrations may be relevant to the metabolic control of type 2 diabetes mellitus patients: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Journal of sport and health science 2023 PubMed DOI
A Food fortification with multiple micronutrients: impact on health outcomes in general population
Meta Analysis The Cochrane database of systematic reviews 2019 PubMed DOI
A Oral vitamin A supplements to prevent acute upper respiratory tract infections in children up to seven years of age
Meta Analysis The Cochrane database of systematic reviews 2024 PubMed DOI
View all evidence for Vitamin A →
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.