Name: Biotin 15,000mcg Capsules | Zinc, B12, D3 & Folate | Hair & Nail Health
Brand: evaly store
SKU: 1773831907885285376
Price: 11980.0 JPY
Availability: InStock

Before starting this, I was collecting a lot of hair from my brush every morning. After about 8 weeks I realized the brush looked noticeably different. I was skeptical at first because I had tried other biotin supplements without seeing much change. This one was different enough that I noticed before anyone told me.

Ayaka M., Tokyo

My nails were thin and would split from the edges. Around 6 weeks in, they started feeling harder at the tips. Recently they do not break even when they snag. My hairdresser also mentioned my hair condition had improved, and I realized it lined up with when I started this.

Reiko N., Osaka

I was on DHC biotin for two years in Japan. After switching to this 15,000mcg capsule, I noticed my nails stopped peeling at the edges around week three. By week eight my ponytail felt noticeably thicker when I tied it up. The dose difference is real.

Sarah T., Tokyo

I was skeptical of high-dose biotin. Three weeks in, the nail edge chipping stopped. I take it with the free serum and the combination feels like a complete inside-out routine.

Emma K., Yokohama

Before starting this, I was collecting a lot of hair from my brush every morning. After about 8 weeks I realized the brush looked noticeably different. I was skeptical at first because I had tried other biotin supplements without seeing much change. This one was different enough that I noticed before anyone told me.

Ayaka M., Tokyo

My nails were thin and would split from the edges. Around 6 weeks in, they started feeling harder at the tips. Recently they do not break even when they snag. My hairdresser also mentioned my hair condition had improved, and I realized it lined up with when I started this.

Reiko N., Osaka

I was on DHC biotin for two years in Japan. After switching to this 15,000mcg capsule, I noticed my nails stopped peeling at the edges around week three. By week eight my ponytail felt noticeably thicker when I tied it up. The dose difference is real.

Sarah T., Tokyo

I was skeptical of high-dose biotin. Three weeks in, the nail edge chipping stopped. I take it with the free serum and the combination feels like a complete inside-out routine.

Emma K., Yokohama

Before starting this, I was collecting a lot of hair from my brush every morning. After about 8 weeks I realized the brush looked noticeably different. I was skeptical at first because I had tried other biotin supplements without seeing much change. This one was different enough that I noticed before anyone told me.

Ayaka M., Tokyo

My nails were thin and would split from the edges. Around 6 weeks in, they started feeling harder at the tips. Recently they do not break even when they snag. My hairdresser also mentioned my hair condition had improved, and I realized it lined up with when I started this.

Reiko N., Osaka

I was on DHC biotin for two years in Japan. After switching to this 15,000mcg capsule, I noticed my nails stopped peeling at the edges around week three. By week eight my ponytail felt noticeably thicker when I tied it up. The dose difference is real.

Sarah T., Tokyo

I was skeptical of high-dose biotin. Three weeks in, the nail edge chipping stopped. I take it with the free serum and the combination feels like a complete inside-out routine.

Emma K., Yokohama

Before starting this, I was collecting a lot of hair from my brush every morning. After about 8 weeks I realized the brush looked noticeably different. I was skeptical at first because I had tried other biotin supplements without seeing much change. This one was different enough that I noticed before anyone told me.

Ayaka M., Tokyo

My nails were thin and would split from the edges. Around 6 weeks in, they started feeling harder at the tips. Recently they do not break even when they snag. My hairdresser also mentioned my hair condition had improved, and I realized it lined up with when I started this.

Reiko N., Osaka

I was on DHC biotin for two years in Japan. After switching to this 15,000mcg capsule, I noticed my nails stopped peeling at the edges around week three. By week eight my ponytail felt noticeably thicker when I tied it up. The dose difference is real.

Sarah T., Tokyo

I was skeptical of high-dose biotin. Three weeks in, the nail edge chipping stopped. I take it with the free serum and the combination feels like a complete inside-out routine.

Emma K., Yokohama

Before starting this, I was collecting a lot of hair from my brush every morning. After about 8 weeks I realized the brush looked noticeably different. I was skeptical at first because I had tried other biotin supplements without seeing much change. This one was different enough that I noticed before anyone told me.

Ayaka M., Tokyo

My nails were thin and would split from the edges. Around 6 weeks in, they started feeling harder at the tips. Recently they do not break even when they snag. My hairdresser also mentioned my hair condition had improved, and I realized it lined up with when I started this.

Reiko N., Osaka

I was on DHC biotin for two years in Japan. After switching to this 15,000mcg capsule, I noticed my nails stopped peeling at the edges around week three. By week eight my ponytail felt noticeably thicker when I tied it up. The dose difference is real.

Sarah T., Tokyo

I was skeptical of high-dose biotin. Three weeks in, the nail edge chipping stopped. I take it with the free serum and the combination feels like a complete inside-out routine.

Emma K., Yokohama

Before starting this, I was collecting a lot of hair from my brush every morning. After about 8 weeks I realized the brush looked noticeably different. I was skeptical at first because I had tried other biotin supplements without seeing much change. This one was different enough that I noticed before anyone told me.

Ayaka M., Tokyo

My nails were thin and would split from the edges. Around 6 weeks in, they started feeling harder at the tips. Recently they do not break even when they snag. My hairdresser also mentioned my hair condition had improved, and I realized it lined up with when I started this.

Reiko N., Osaka

I was on DHC biotin for two years in Japan. After switching to this 15,000mcg capsule, I noticed my nails stopped peeling at the edges around week three. By week eight my ponytail felt noticeably thicker when I tied it up. The dose difference is real.

Sarah T., Tokyo

I was skeptical of high-dose biotin. Three weeks in, the nail edge chipping stopped. I take it with the free serum and the combination feels like a complete inside-out routine.

Emma K., Yokohama

Before starting this, I was collecting a lot of hair from my brush every morning. After about 8 weeks I realized the brush looked noticeably different. I was skeptical at first because I had tried other biotin supplements without seeing much change. This one was different enough that I noticed before anyone told me.

Ayaka M., Tokyo

My nails were thin and would split from the edges. Around 6 weeks in, they started feeling harder at the tips. Recently they do not break even when they snag. My hairdresser also mentioned my hair condition had improved, and I realized it lined up with when I started this.

Reiko N., Osaka

I was on DHC biotin for two years in Japan. After switching to this 15,000mcg capsule, I noticed my nails stopped peeling at the edges around week three. By week eight my ponytail felt noticeably thicker when I tied it up. The dose difference is real.

Sarah T., Tokyo

I was skeptical of high-dose biotin. Three weeks in, the nail edge chipping stopped. I take it with the free serum and the combination feels like a complete inside-out routine.

Emma K., Yokohama

Before starting this, I was collecting a lot of hair from my brush every morning. After about 8 weeks I realized the brush looked noticeably different. I was skeptical at first because I had tried other biotin supplements without seeing much change. This one was different enough that I noticed before anyone told me.

Ayaka M., Tokyo

My nails were thin and would split from the edges. Around 6 weeks in, they started feeling harder at the tips. Recently they do not break even when they snag. My hairdresser also mentioned my hair condition had improved, and I realized it lined up with when I started this.

Reiko N., Osaka

I was on DHC biotin for two years in Japan. After switching to this 15,000mcg capsule, I noticed my nails stopped peeling at the edges around week three. By week eight my ponytail felt noticeably thicker when I tied it up. The dose difference is real.

Sarah T., Tokyo

I was skeptical of high-dose biotin. Three weeks in, the nail edge chipping stopped. I take it with the free serum and the combination feels like a complete inside-out routine.

Emma K., Yokohama

Before starting this, I was collecting a lot of hair from my brush every morning. After about 8 weeks I realized the brush looked noticeably different. I was skeptical at first because I had tried other biotin supplements without seeing much change. This one was different enough that I noticed before anyone told me.

Ayaka M., Tokyo

My nails were thin and would split from the edges. Around 6 weeks in, they started feeling harder at the tips. Recently they do not break even when they snag. My hairdresser also mentioned my hair condition had improved, and I realized it lined up with when I started this.

Reiko N., Osaka

I was on DHC biotin for two years in Japan. After switching to this 15,000mcg capsule, I noticed my nails stopped peeling at the edges around week three. By week eight my ponytail felt noticeably thicker when I tied it up. The dose difference is real.

Sarah T., Tokyo

I was skeptical of high-dose biotin. Three weeks in, the nail edge chipping stopped. I take it with the free serum and the combination feels like a complete inside-out routine.

Emma K., Yokohama

Before starting this, I was collecting a lot of hair from my brush every morning. After about 8 weeks I realized the brush looked noticeably different. I was skeptical at first because I had tried other biotin supplements without seeing much change. This one was different enough that I noticed before anyone told me.

Ayaka M., Tokyo

My nails were thin and would split from the edges. Around 6 weeks in, they started feeling harder at the tips. Recently they do not break even when they snag. My hairdresser also mentioned my hair condition had improved, and I realized it lined up with when I started this.

Reiko N., Osaka

I was on DHC biotin for two years in Japan. After switching to this 15,000mcg capsule, I noticed my nails stopped peeling at the edges around week three. By week eight my ponytail felt noticeably thicker when I tied it up. The dose difference is real.

Sarah T., Tokyo

I was skeptical of high-dose biotin. Three weeks in, the nail edge chipping stopped. I take it with the free serum and the combination feels like a complete inside-out routine.

Emma K., Yokohama

What Makes Evaly Different

Up to 50% OFF. Free shipping available in cart

Biotin 15,000mcg Capsules | Zinc, B12, D3 & Folate | Hair & Nail Health

15,000mcg biotin + Zinc 10mg + B12 + D3 + Folate + Vitamin C + Selenium. No sugar. Capsule. 30-day supply.

Each capsule delivers 15,000mcg of biotin, six times the dose used in published nail brittleness research (Floersheim, 1989, 71 patients; Colombo, 1990, 32 patients). Both studies were conducted at 2,500mcg daily.

Biotin functions as a coenzyme for carboxylase reactions in amino acid metabolism and fatty acid synthesis, both critical pathways for keratin production in hair follicle cells.

6 Synergistic Co-Vitamins

Zinc 10mg, Vitamin B12 250mcg, Vitamin D3 1,000 IU, Folate 400mcg, Vitamin C 60mg, Selenium 55mcg. Each documented in hair follicle cell research.

The biotin + zinc + selenium combination is the only formula with RCT-level hair density data per the Frontiers in Nutrition 2025 network meta-analysis of 20 randomized controlled trials.

No Sugar, No Binders

No added sugar, no artificial flavor, no binders. Capsule shell is hydroxypropyl methylcellulose. Delivers the full 15,000mcg dose without the 5g of sugar found in most biotin gummies.

90-Day Guarantee

Love your results in 90 days of consistent daily use, or contact us and we will refund your most recent order. No complicated return process. Subscribe and Save: 30% off every order plus free PureGlow Hair Vitamin Serum in your first shipment.

What you can expect, and when.

3 Months Lifestyle Shift

Customer case study: evening stress-eating cycle replaced with "dinner, a walk, and done"

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Weeks 1-3

Biotin and co-vitamins reach steady-state in your cells. The nail matrix begins receiving higher daily doses. Most customers do not see visible changes yet.

The cells that will become your nails in week 6 are being built now. Nails may feel slightly harder at the base. Consistent daily use from day 1 is what drives week-6 results.

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Weeks 4-6

First visible nail changes: less chipping at the edges, harder feel when pressing the tip. Some customers notice less hair in the shower drain or on the brush.

This is when most customers first realize something is working. Hair shedding changes typically follow nail changes by 2-4 weeks.

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Weeks 8-12

Hair density and texture improvements become noticeable. New growth from week 1 has grown enough to add volume at the roots. Nails are consistently harder.

This timeline aligns with published research at 2,500mcg daily (Floersheim, 1989; Colombo, 1990). This formula delivers six times that studied dose.

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. Consult your healthcare provider before starting any new supplement, especially if you are pregnant, nursing, taking medication, or have a medical condition. Individual results vary. The testimonials on this page reflect individual experiences and are not a guarantee of specific results.

Talk to an Expert

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Your body transforms before you feel it.

Nails

Nails respond first because they grow faster than hair. Edge chipping and splitting decrease as biotin and zinc levels build in follicle cells.

The nail matrix is receiving the highest daily biotin dose it has ever had. Most customers describe nails feeling harder at the tip before they see the difference.

Hair Shedding

Hair shedding decreases as follicles receive consistent nutritional support. You notice less on your brush and less in the shower drain.

New growth at the root begins to feel denser. Existing hair feels stronger during styling. This phase is when colleagues start to notice.

Hair Density

Visible changes in hair density and texture. New growth from week 1 has grown enough to add volume at the roots.

This timeline matches published research (Floersheim, 1989; Colombo, 1990) at 2,500mcg daily. This formula delivers six times that dose.

Long-Term

Hair is noticeably thicker, stronger, and shows more natural shine. Nails hold their shape consistently. Subscribe and Save keeps your supply uninterrupted.

90-day satisfaction guarantee covers your first cycle. Consistent daily use is what drives long-term results.

Find out why the experts trust Evaly's products

Dr. Alaric Vance, MD, PhD

Biotin (Vitamin B7) at 15,000mcg functions as a coenzyme for carboxylase reactions in amino acid metabolism and fatty acid synthesis, both critical pathways for keratin production in hair follicle cells.

Published nail brittleness research (Floersheim, 1989, 71 patients; Colombo, 1990, 32 patients) was conducted at 2,500mcg daily. This formula delivers six times that studied dose.

Note: biotin above 1mg per day may interfere with immunoassay lab tests including thyroid panels, troponin, and hormone panels. FDA safety communications issued 2017 and 2019. Pause 48-72 hours before any scheduled bloodwork and tell your healthcare provider.

Dr. Elara Sterling, Board-Certified Gerontologist

Zinc (10mg as zinc gluconate) is an essential cofactor for over 300 enzymatic reactions, including keratinocyte proliferation and DNA synthesis in hair follicle cells. Zinc deficiency is a documented cause of telogen effluvium (hair shedding). Zinc gluconate is a well-absorbed organic zinc form.

Vitamin B12 (250mcg as methylcobalamin, the active coenzyme form) supports DNA synthesis in rapidly dividing follicle matrix cells and is synergistic with biotin in one-carbon metabolism.

The biotin + zinc + selenium combination is the only formula with RCT-level hair density data per the Frontiers in Nutrition 2025 network meta-analysis of 20 randomized controlled trials.

Dr. Julian Thorne, DPT, Performance Specialist

Vitamin D3 (1,000 IU as cholecalciferol): Vitamin D receptors are expressed in hair follicle cells and regulate the transition between the active growth phase (anagen) and the resting phase (catagen). Vitamin D insufficiency is associated with all major types of hair shedding.

Folate (400mcg as L-5-methyltetrahydrofolate): The bioactive form that bypasses the MTHFR conversion step. Directly synergistic with biotin in one-carbon metabolism. Required for cell division in rapidly proliferating hair follicle matrix cells.

Dr. Sianna Holbrook, MD, Internal Medicine

Vitamin C (60mg as ascorbic acid) is required for collagen synthesis in the dermal papilla and increases iron absorption from food. Iron deficiency is the most common nutritional cause of hair shedding in women.

Selenium (55mcg as selenomethionine, the organic bioavailable form) supports glutathione peroxidase activity in follicle cells, providing antioxidant protection.

Together with biotin and zinc, this trio is the only combination with RCT-level hair density data (Frontiers in Nutrition 2025, 20 randomized controlled trials).

The EVALY Standard

We are committed to providing our community with formulas that are based on specifically selected ingredients, informed by science and grounded in care.

	evaly store	GLP-1 Injections
Testing, reliability, accuracy + quality control
Thoughtfully designed to target health concerns
Cost 6,855-9,020 yen/mo Others: 80,000-135,000 yen/mo
No Side Effects, No Prescription

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“Gained weight after moving to Japan. Biggest change is mental - stopped obsessing over every meal.”

•

“Skeptical at first. Week two, noticed not finishing lunch. Afternoon energy more stable.”

•

“Company health check had bad numbers. After 3 weeks, picking smaller bento boxes. Appetite adjusted.”

•

“Mom of two under five. Stopped eating kids' leftover nuggets. Cravings for sweets calmed down.”

•

“Gained weight after moving to Japan. Biggest change is mental - stopped obsessing over every meal.”

•

“Skeptical at first. Week two, noticed not finishing lunch. Afternoon energy more stable.”

•

“Company health check had bad numbers. After 3 weeks, picking smaller bento boxes. Appetite adjusted.”

•

“Mom of two under five. Stopped eating kids' leftover nuggets. Cravings for sweets calmed down.”

•

“Gained weight after moving to Japan. Biggest change is mental - stopped obsessing over every meal.”

•

“Skeptical at first. Week two, noticed not finishing lunch. Afternoon energy more stable.”

•

“Company health check had bad numbers. After 3 weeks, picking smaller bento boxes. Appetite adjusted.”

•

“Mom of two under five. Stopped eating kids' leftover nuggets. Cravings for sweets calmed down.”

•

“Gained weight after moving to Japan. Biggest change is mental - stopped obsessing over every meal.”

•

“Skeptical at first. Week two, noticed not finishing lunch. Afternoon energy more stable.”

•

“Company health check had bad numbers. After 3 weeks, picking smaller bento boxes. Appetite adjusted.”

•

“Mom of two under five. Stopped eating kids' leftover nuggets. Cravings for sweets calmed down.”

We are serious about nutrition, ask away

Formulated by our expert in-house

Biologists & Clinical Researchers

Transparency is the foundation of longevity. We have compiled the most common inquiries regarding the science of Evaly's product.

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Is 15,000mcg of biotin safe to take daily?

Biotin is water-soluble. Your body excretes excess rather than storing it, and no tolerable upper intake level has been established. The FDA issued safety communications in 2017 and 2019 noting that biotin above 1mg per day may interfere with immunoassay lab tests, including thyroid panels, troponin tests, and hormone panels. This product contains 15mg per serving, above that threshold. If you have scheduled bloodwork, pause biotin 48 to 72 hours before your appointment and tell your healthcare provider you have been taking it.

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How does this compare to your biotin gummies?

Our biotin gummies (3,298 yen per month) deliver 5,000mcg per serving, a solid daily dose. This capsule delivers 15,000mcg per serving, three times that dose, with no sugar and no binders. Both are good choices. The capsule is for women who want maximum daily support.

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How does this compare to DHC?

DHC's standard biotin tablet contains 500mcg per serving at approximately 282 yen per month on subscription. This capsule delivers 15,000mcg, 30 times DHC's dose, plus six co-vitamins not included in DHC's biotin product. Subscribe and Save customers also receive a free PureGlow Hair Vitamin Serum (7,350 yen standalone value) in their first shipment. It is a different tier of daily support.

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What are the full ingredients?

Per serving: Biotin 15,000mcg, Zinc 10mg (as zinc gluconate), Vitamin B12 250mcg (as methylcobalamin), Vitamin D3 1,000 IU (as cholecalciferol), Folate 400mcg (as L-5-methyltetrahydrofolate), Vitamin C 60mg (as ascorbic acid), Selenium 55mcg (as selenomethionine). Capsule shell: hydroxypropyl methylcellulose. No artificial colors. No added sugar.

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When will I see results?

Most customers notice nail changes first, typically around weeks 4-6. Nails respond first because they grow faster than hair.

Hair shedding reduction often follows around weeks 6-10. Hair density and texture changes take longer, typically weeks 8-12.

This matches the timeline in published nail brittleness research (Floersheim, 1989; Colombo, 1990), which showed meaningful improvements within 6-12 weeks at 2,500mcg daily. This formula delivers six times that studied dose. Consistent daily use matters more than any single day.

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When is the best time to take this?

Take one capsule daily with a meal, ideally at the same time each day. Most customers take theirs with breakfast. Taking it with food improves absorption and reduces the chance of any digestive sensitivity. If you exercise in the mornings and take other supplements, this capsule stacks cleanly alongside them.

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Is this product suitable for vegans?

The capsule shell is hydroxypropyl methylcellulose, which is plant-derived. Most ingredients are vegan-compatible.

The vitamin D3 in this formula is cholecalciferol, which is typically derived from lanolin from sheep wool. If strict vegan D3 sourcing is a requirement, contact us before ordering to confirm the current supply chain.

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Can I cancel my subscription at any time?

Yes. You can cancel your Subscribe and Save subscription at any time before your next order processes. Log in to your Evaly account, go to Manage Subscriptions, and cancel there. There is no minimum subscription period.

The PureGlow Hair Vitamin Serum is a first-shipment welcome benefit for new Subscribe and Save customers. It is not included in recurring shipments.

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How does the 90-day guarantee work?

If you are not satisfied with your results after 90 days of consistent daily use, contact us at support@evaly.store and we will refund your most recent order.

Consistent daily use means taking one capsule daily without extended gaps. The guarantee applies to Subscribe and Save customers. Contact us before filing a chargeback and we will resolve it directly.

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Is this safe to take while pregnant or nursing?

We recommend consulting your obstetrician or midwife before starting any new supplement during pregnancy or while nursing. Biotin is water-soluble and generally considered safe, but the safe upper limit at high doses during pregnancy has not been formally established.

The folate (400mcg L-methylfolate) in this formula is beneficial during pregnancy, but your prenatal provider should review your total daily folate intake before adding this product.

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