Hair, Skin & Nails Strawberry Cream Flavored Coating by Kirkland Signature — Ingredients, Evidence & Safety

🟢 100/100

This product looks safe

No ingredients exceed tolerable upper intake levels
59% of ingredients have research evidence

A Label Compliance Grade

Product Label

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Label Data

2 Tablet(s) Serving Size

120 Servings

Other Combinations Product Type

59% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin A

5000 IU (100% DV)

Vitamin C

60 mg (100% DV)

Vitamin D3

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

Vitamin E

15 IU (50% DV)

✅ Within RDA (0.7× RDA of 15 mg) 📚 177 studies (Tier A: 3, B: 90)

RDA 15mg This product: 10.05mg UL 1000mg

Thiamine

5 mg (333% DV)

📊 4.2× RDA — above typical dose 📚 76 studies (Tier A: 0, B: 33)

RDA 1.2mg This product: 5mg

Riboflavin

5 mg (294% DV)

📊 3.8× RDA — above typical dose 📚 12 studies (Tier A: 0, B: 1)

RDA 1.3mg This product: 5mg

Niacin

25 mg (125% DV)

✅ 1.8× RDA — within safe limits 📚 193 studies (Tier A: 5, B: 63)

RDA 14mg This product: 25mg UL 35mg

Vitamin B6

5 mg (250% DV)

📊 3.8× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)

RDA 1.3mg This product: 5mg UL 100mg

Folate

200 mcg (50% DV)

✅ Within RDA (0.5× RDA of 0.4 mg) 📚 225 studies (Tier A: 10, B: 105)

RDA 0.4mg This product: 0.2mg UL 1.0mg

Vitamin B12

8 mcg (133% DV)

📊 3.3× RDA — above typical dose 📚 138 studies (Tier A: 1, B: 44)

RDA 0.0024mg This product: 0.008mg

Biotin

5000 mcg (1667% DV)

📊 166.7× RDA — above typical dose 📚 26 studies (Tier A: 0, B: 11)

RDA 0.03mg This product: 5.0mg

Pantothenic Acid

15 mg (150% DV)

✅ 3.0× RDA — within safe limits 📚 1 studies — no high-quality reviews

RDA 5mg This product: 15mg

Calcium

260 mg (26% DV)

Phosphorus

128 mg (13% DV)

✅ Within RDA (0.2× RDA of 700 mg) 📚 12 studies (Tier A: 0, B: 3)

RDA 700mg This product: 128mg UL 4000mg

Magnesium

50 mg (13% DV)

📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)

This product: 50mg

Zinc

7.5 mg (50% DV)

✅ Within RDA (0.7× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)

RDA 11mg This product: 7.5mg UL 40mg

Manganese

2 mg (100% DV)

✅ Within RDA (0.9× RDA of 2.3 mg) 📚 8 studies — no high-quality reviews

RDA 2.3mg This product: 2mg UL 11mg

PABA

10 mg

📊 Market median: 500.0mg (9 products)

This product: 10mg

Choline Bitartrate

10 mg

📊 Market median: 125.0mg (294 products) 📚 36 studies (Tier A: 1, B: 7)

RDA 550mg This product: 10mg UL 3500mg

Inositol

30 mg

📊 Market median: 550.0mg (217 products) 📚 29 studies (Tier A: 0, B: 5)

This product: 30mg

Ribonucleic Acid

10 mg

Citrus Bioflavonoid

30 mg

📊 Market median: 500.0mg (283 products) 📚 173 studies (Tier A: 0, B: 62)

This product: 30mg

Rutin

8 mg

📊 Market median: 500.0mg (19 products)

This product: 8mg

Horsetail

3 mg

hydrolyzed Collagen

50 mg

📊 Market median: 20.0mg (931 products) 📚 233 studies (Tier A: 1, B: 90)

This product: 50mg

Alpha Lipoic Acid

10 mg

📊 Market median: 200.0mg (198 products) 📚 6 studies — no high-quality reviews

This product: 10mg

Keratin

100 mg

Other Ingredients

Dicalcium Phosphate Microcrystalline Cellulose Calcium Carbonate Keratin Crospovidone Magnesium Oxide Stearic Acid Ascorbic Acid Zinc Gluconate hydrolyzed Collagen Silicon Dioxide Inositol Citrus Bioflavonoids DL-Alpha-Tocopheryl Acetate Retinyl Palmitate Niacinamide Hydroxypropyl Methylcellulose Calcium D-Pantothenate Manganese Gluconate Polydextrose Titanium Dioxide Alpha Lipoic Acid Cholecalciferol Choline Bitartrate Magnesium Stearate Para-Aminobenzoic Acid Talc Polyvinyl Alcohol Ribonucleic Acid Rutin natural Strawberry flavor Pyridoxine Hydrochloride Thiamine Hydrochloride Biotin Riboflavin Maltodextrin Horsetail Polyethylene Glycol Medium Chain Triglycerides Pearlescent Pigment Red Beet powder Cyanocobalamin Polysorbate 80 Folic Acid Carmine Fish Gelatin May contain

Label Claims — Verification

❓ Nutrient

❓ All Other

❓ Structure/Function

All Other (99% of products) Structure/Function (76% of products) Nutrient (58% of products)

Target Groups

Adult (18 - 50 Years) Gluten Free

Product Information

📋 Directions for Use

Suggested use: Two tablets daily with food as a dietary supplement.

⚠️ Warnings & Precautions

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

Keep out of the reach of children.

Contains: Fish (cod, cusk, flounder, haddock, hake, pollack, redfish, sole, tilapia).

Important: Tamper-evident seal under cap. Do not use if imprinted seal is broken or missing.

🧪 Formulation Notes

Kirkland Signature Hair, Skin & Nails has the right combination of vitamins, minerals and herbs to help maintain healthy hair, skin and nails. It includes key antioxidants - such as vitamin A, vitamin C, and vitamin E - that help fight free radicals and assist in cellular function and integrity. In addition, vitamin C helps support collagen production, which is essential for maintaining healthy skin. Calcium is critical for strong nails. Biotin is an important B-complex vitamin that helps support healthy hair structure Keratin is a key protein in the formation of hair, skin and nails.

No artificial dyes or flavors No gluten No lactose No trans fat

With Keratin

High potency Biotin 5000 mcg plus antioxidants Vitamin A & C Calcium Vitamin D3

Contains: Fish (cod, cusk, flounder, haddock, hake, pollack, redfish, sole, tilapia).

Additional Information

Quality purity potency

Store at 15(0)-30(0)C (59(0)-86(0)F).

Helps support lustrous hair, radiant skin & healthy nails

Product Details

UPC / SKU 0 96619 69015 2

DSLD Entry Date 2019-10-23

Product Type Other Combinations

Form Tablet or Pill

Brand Kirkland Signature

DSLD ID 207461

Data Updated 2026-04-11

Research Evidence

337 Research Sources

54 Avg Quality Score

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 Cochrane

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 Cochrane

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 Cochrane

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 Cochrane

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 Cochrane

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 →