This gummy markets itself for hair, skin, and nails, but the doses tell a different story. **Biotin** at 2,500mcg is within the supplemental range, though clinical evidence for hair benefits in people who aren't biotin-deficient is very limited. The **Collagen** at 100mg per serving is about 2% of the minimum clinical dose (5,000mg) used in skin research — far too low to deliver the results you'd expect from a collagen supplement.

**Vitamin C** at 15mg is only 6% of the minimum dose used in clinical studies, and **Vitamin E** comes in the synthetic dl-alpha form, which your body absorbs at roughly half the rate of the natural version — and at 6.75mg, it's well below the studied range of 50–268mg.

The biggest gap here is that the ingredients most relevant to skin and hair — collagen and vitamin C — are present in amounts too small to move the needle. You're primarily getting a biotin supplement in gummy form, and biotin alone has weak evidence for cosmetic benefits unless you have an underlying deficiency.

BioStacks
Nature's Bounty

Optimal Solutions, Hair, Skin & Nails Gummies, Tropical Citrus, 140 Gummies

2 Gummies · 70 servings · $0.21/serving

41 / 100Average

Best for

Score Breakdown

Formulation
55
Safety
75
Final score
41/100

Ingredients (4)

Biotin2500 mcg

Optimal dose · Premium form

Vitamin ESynergy6.8 mg

14% of effective dose · Budget form

Vitamin CSynergy15 mg

60% of effective dose · Budget form

Collagen0.1 g

2% of effective dose · Unspecified form

Other Ingredients

Fillers, coatings, and additives

8Safe3Caution

Glucose SyrupSweetener

Caution

MaltodextrinBinder

Caution

SucroseSweetener

Caution

Fruit Juice (unspecified)Colorant

Safe

Natural FlavorsFlavor

Safe

Silicon DioxideAnti-caking

Safe

Citric AcidAcidulant

Safe

Dicalcium PhosphateBinder

Safe

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.