Thyroid Hair Density OilFollicle Support Treatment for Shedding & Thinning 2 oz
$34.99 — or subscribe to save 10%
- Made for Thyroid Hair: 2% Rosemary and 38% Pumpkin seed oil provide support to roots that are weak and fragile from a sluggish thyroid.*
- Support Dormant Follicles: Target your roots that are stuck in the resting phase, encouraging them to transition to the growth phase for a dense, thick, and fuller appearance.*
- Keep More Hair On Your Head: Research-backed ingredients and clinical dosing help keep hair on your head and less in the shower drain and on your pillow.*
- Targets the 3 Causes of Thyroid-Related Thinning: Made specifically for thyroid patients to support scalp circulation, local nutrient depletion, and follicle dryness.*
No parabens, sulfates, or artificial fragrance.
Ingredients
- Pumpkin seed oil 38%, castor oil 22%
- Jojoba oil 18%, argan oil 10%
- Squalane 9%, plant derived from olives or sugarcane
- Rosemary oil 2%, the dose used in published research
- Vitamin E 1% as a natural antioxidant preservative
No water, no carrier dilution, no silicones, sulfates, parabens or artificial fragrance. See the research on each oil below.
How to use
Apply 5 to 10 drops directly to the scalp, focusing on areas of thinning. Massage in with your fingertips for 1 to 2 minutes, leave on 30 minutes or overnight, then wash out. Use 3 to 4 times per week. For external use only.
Shipping and returns
Free US shipping on every order, processed within 1 business day, arriving in 3 to 5 business days via USPS Ground Advantage. 60 day money-back guarantee: if it does not work for you, return it for a full refund. No questions asked.
Why thyroid hair thins
Noticed a decline in hair quality, texture and density since your diagnosis?
You’re not imagining it. Thyroid disease traps your hair in the shedding phase[9][11] while simultaneously triggering hormonal imbalances that lead to difficult-to-treat thinning.[10]
Thyroid medications don’t address this, which is why your hair stays brittle and damaged even with normal labs.
But Thyroid Hair Density Oil does.
I loaded it with 7 clinically backed plant-based oils designed to nourish damaged follicles, help stop excessive shedding, and wake up your roots in the resting phase.
Dr. Westin ChildsThyroid specialist and formulator
Your hair gets stuck in the shedding phase
Your thyroid sets the pace of your hair cycle. When it slows down, your follicles stall in the resting phase instead of cycling back into growth.[10][11]
Your scalp stops making its own oils
Hypothyroidism slows the production of natural scalp oils, which leaves the scalp dry, the hair shaft brittle, and the follicle environment compromised.
This formula targets all three causes
Seven cold-pressed oils that support scalp circulation, local nutrient depletion, and follicle dryness at the same time.*
Research-backed ingredients
Seven cold-pressed oils, and nothing else
Here’s what’s in the bottle, and why each oil is in there:
Every oil and its exact percentage. Click to enlarge.100% active oils, no fillers
Every drop in the bottle is an active working ingredient. No water, no carrier dilution, no synthetic fragrance. Just seven oils to help your thyroid hair.
100% plant-based formula
Every ingredient is plant-derived. There are no animal byproducts, no shark-derived squalane, no synthetic actives. Just pure botanical oils.
No silicones, sulfates, or parabens
Free from the additives that build up on the scalp, irritate the follicle, and disrupt hormone balance.
Naturally preserved with vitamin E
Vitamin E (tocopherol) acts as a natural antioxidant preservative, keeping the formula stable and shelf-safe without synthetic stabilizers like phenoxyethanol or BHT.
Pumpkin seed oil 38%
Pumpkin seed oil is one of the most studied plant-based ingredients for hair density.[1] It contains beta-sitosterol, a natural compound that helps inhibit the 5-alpha-reductase enzyme which is responsible for hair thinning in thyroid patients. We made it the largest ingredient in this formula at 38% for that reason.
Castor oil 22%
Thyroid problems will cause your hair to dry out, break, and split. This is where castor oil steps in: It contains ricinoleic acid which helps your follicles lock in moisture, helping to prevent hair shaft damage. You can think of this as a scalp conditioner to your hair follicles.
Jojoba oil 18%
Jojoba is technically a liquid wax, not an oil, and that’s exactly why it works so well on the scalp. Its structure is nearly identical to the sebum your scalp already makes, so your scalp recognizes it and absorbs it instead of leaving it sitting on top.[5] If your oil production has stalled, jojoba steps in to balance the scalp without clogging follicles.
Argan oil 10%
We added argan oil for its incredible ability to bring dull, brittle thyroid hair back to life. It’s rich in antioxidants and oleic acid, which nourish the hair shaft to help with shine.[6] It’s also lightweight which means it won’t leave your hair weighed down or feeling greasy.
Squalane 9%
Your body makes squalene on its own as part of healthy sebum, but production drops with age, with stress, and with hypothyroidism. Squalane is the shelf-stable form, and it slips into your scalp’s own lipid barrier without disrupting it. Ours is plant-derived from olives or sugarcane. No shark byproducts, ever.
Rosemary oil 2%
Rosemary oil is one of the only plant-based ingredients with clinical trials showing it may rival prescription topical treatments for hair density.[2][3] It works by supporting bloodflow and nutrients to the scalp which nourish the follicle with what it needs to regrow the hair. Every single drop provides the exact 2% dose used in clinical studies.
Vitamin E oil 1%
Vitamin E does two jobs here. It’s the natural antioxidant preservative that keeps the rest of the formula stable, and it’s one of the most studied nutrients for hair density on its own.[7] Applied to the scalp, it helps clear the oxidative damage that breaks down hair structure.[8]
The research behind the formula
What the studies actually show
Rosemary oil, head to head with minoxidil
100 patients with androgenetic alopecia were given either rosemary oil or 2% minoxidil for 6 months. Both groups increased their hair count, and the difference between the two groups wasn’t significant. Scalp itching was more common in the minoxidil group.
Pumpkin seed oil and DHT
Pumpkin seed oil helps block 5-alpha reductase, the enzyme behind pattern thinning. Over 24 weeks, hair count rose 40% in the pumpkin seed group and 10% on placebo. That trial used an oral dose, and this formula puts the same oil directly on your scalp at 38%.
Your thyroid controls the follicle itself
Thyroid hormone acts directly on the stem cells inside your hair follicles. That’s why thyroid hair loss shows up early, and why it doesn’t follow the same pattern as ordinary thinning.
Complete the system
Thyroid hair damage happens at three levels
Internal, scalp and cellular. Each product targets a different one. Used together they form a complete protocol for thyroid patients serious about restoring hair density.
Thyroid Hair Regrowth Complex
The internal foundation. Targets the nutrient and hormone causes of thyroid hair loss from within.
Thyroid Hair Density Oil
The scalp nourisher. Restores moisture, supports density, and protects the hair shaft.
You are here
Thyro Hair Light
The cellular energizer. Red light therapy targeting follicle ATP production at the deepest layer.
Your new routine
Five to ten drops, three to four times a week
- 1
Apply 5 to 10 drops directly to the scalpWork it into your scalp where you can see thinning, not into the lengths of your hair.
- 2
Massage in for 1 to 2 minutesUse your fingertips. The massage itself supports scalp circulation.
- 3
Leave it on 30 minutes or overnight, then wash outThe longer it sits, the more time the active oils have to work.
- 4
Repeat 3 to 4 times per weekFor best results, pair it with Thyroid Hair Regrowth Complex daily. The oil treats your thyroid hair from the outside in, and the capsule treats it from the inside out.
What to expect
Softer, shinier hair
Most people notice their hair feels softer and looks shinier within the first few weeks.
Visible density
Your hair grows on a 12 week cycle, so this is the first point where you can fairly judge changes in fullness and density.
The most noticeable improvements
It takes several hair growth cycles to reach the full benefit, which is why the biggest changes show up here.
How it compares
See how Thyroid Hair Density Oil compares
| Thyroid Hair Density Oil | Generic hair oils | Single-oil products | Drugstore hair serums | |
|---|---|---|---|---|
| Made for thyroid patients | ✓ | ✕ | ✕ | ✕ |
| Targets all three causes of thyroid thinning | ✓ | ✕ | ✕ | ? |
| Rosemary at the 2% dose used in research | ✓ | ? | ? | ✕ |
| Seven oils in one bottle | ✓ | ✕ | ✕ | ? |
| 100% active oils, no water or fillers | ✓ | ✕ | ✓ | ✕ |
| Created by a thyroid expert | ✓ | ✕ | ✕ | ✕ |
| Third-party tested for heavy metals and microbes | ✓ | ? | ? | ? |
| Free of silicones, sulfates and parabens | ✓ | ? | ✓ | ✕ |
| Safe alongside thyroid medication | ✓ | ✓ | ✓ | ? |
| 60 day money-back guarantee | ✓ | ✕ | ✕ | ✕ |
Frequently Asked Questions
How do I apply Thyroid Hair Density Oil?
Apply 5 to 10 drops directly to the scalp, focusing on areas of thinning, then massage gently with your fingertips for 1 to 2 minutes. Leave on for at least 30 minutes before washing out with shampoo.
For best results, use it as an overnight treatment 2 to 3 times per week. The longer it sits, the more time the active oils have to work.
Can I use this with my thyroid medication?
Yes, always. This is a topical product applied to the scalp, not something you take by mouth, so there’s no interaction with thyroid medication of any kind: levothyroxine, Synthroid, NDT, T3, or compounded formulas.
How long until I see results?
Hair grows on a long timeline, and any topical product takes patience to evaluate.
Most people notice their hair feels softer and looks shinier within the first few weeks. Visible changes in fullness and density typically require 12 weeks of consistent use, with the most noticeable improvements showing up between months 3 and 6.
Stick with it. Hair regrowth and density improvements are slow but real.
Will it make my hair greasy?
Not if you use it correctly. This is a treatment oil designed to be applied to the scalp, left on for 30 minutes to overnight, and then washed out with shampoo.
It’s not a leave-in product. The combination of jojoba and squalane in the formula is intentionally chosen to be lightweight and non-comedogenic, but the heavier oils (castor, pumpkin seed) will leave residue that needs to be washed out.
Will it work for telogen effluvium (sudden shedding)?
Telogen effluvium is the most common form of thyroid-related hair loss, and yes, this oil is designed with it in mind.[11]
Telogen effluvium happens when stress on the body (including thyroid dysfunction) pushes a large number of hair follicles into the resting and shedding phase prematurely.[12]
Topical oils support the recovery process by improving scalp circulation, reducing follicle inflammation, and protecting the hair shaft while new growth comes in. For best results, combine this oil with internal support from Thyroid Hair Regrowth Complex.
Will it work for androgenetic alopecia (pattern thinning)?
Yes. The 38% pumpkin seed oil and 2% rosemary oil in this formula were both selected for their evidence in supporting hair density in patients with androgenetic alopecia.[1][2]
Pumpkin seed oil supports DHT balance at the follicle, and rosemary oil supports scalp circulation and follicle activity. Both mechanisms target the underlying drivers of pattern thinning.
Can I use it on color-treated hair?
Yes. The formula is free of sulfates, silicones, and harsh additives that strip color. The oils actually help condition color-treated hair and support the cuticle so color lasts longer.
Is it safe during pregnancy or breastfeeding?
The ingredients in this formula are widely considered safe for topical use during pregnancy and breastfeeding, but rosemary essential oil is sometimes flagged for caution in early pregnancy.
If you are pregnant or breastfeeding, please check with your OB or healthcare provider before starting any new topical product, including this one.
Can I use this with the Thyroid Hair Regrowth Complex capsule?
Yes, and that’s the recommended pairing. The capsule addresses internal causes of thyroid hair loss (nutrient deficiencies, hormone shifts, follicle stress signals from within), and the oil addresses external ones (scalp environment, follicle support at the surface, hair shaft protection).
Used together, you’re attacking the problem from both sides.
What does it smell like?
Lightly herbaceous from the rosemary oil, with the natural earthy note of pumpkin seed and the soft scent of argan. There’s no synthetic fragrance added. Most users find the scent pleasant and not overpowering.
Will it stain my pillowcase if I use it overnight?
The oil is light gold to amber in color and can transfer to fabric. If you use it as an overnight treatment, we recommend using an old pillowcase, a hair towel, or a satin scarf to protect your bedding.
How is this different from a generic rosemary or castor oil?
A generic single-oil product gives you one mechanism. This formula gives you seven, each chosen for a different aspect of how thyroid disease damages hair.
You’re getting DHT support (pumpkin seed), circulation (rosemary), scalp barrier (castor), oil balance (jojoba), shaft repair (argan), lipid restoration (squalane), and antioxidant protection (vitamin E) in one bottle, at clinically meaningful concentrations.
It’s also formulated specifically for the thyroid patient population, which no generic oil on the market is.
How does shipping work?
All domestic orders receive free shipping regardless of price. Orders are typically processed within 1 business day, are shipped out via USPS Ground Advantage, and typically arrive within 3-5 business days.
We also offer international shipping to most countries! International orders ship free if the order value is greater than $250 USD. Otherwise, the price of shipping is calculated on the checkout page. We primarily use USPS for international shipments.
What is your return/refund policy?
All of my products come with a 60-day money-back guarantee. I’m confident that my products will work for you but, in case they don’t, for whatever reason, you can return them for a full refund within 60 days. It makes purchasing them a no-brainer!
You can find more information about our return and refund policy by clicking here.
What if I have other questions?
Don’t hesitate to reach out! Please email us at hello@restartmed.com, and we will do our best to get back to you within a day or so! You can also call us here: (480) 331-9431.
No risk to you
If it doesn’t work, you don’t pay for it
60 day money-back guarantee
I’m confident that my products will work for you but, in case they don’t, for whatever reason, you can return them for a full refund within 60 days.
Third-party tested, every lot
Independently tested for heavy metals, mold, yeast and bacteria. See the results
Free domestic shipping
Every US order ships free via USPS Ground Advantage regardless of price, processed within one business day and arriving in 3 to 5 business days.
Thyroid Hair Density Oil
$34.99 or $31.49 with subscribe and save. Free shipping.
Scientific References
View All References
1. Cho, Y.H., et al. (2014). Effect of pumpkin seed oil on hair growth in men with androgenetic alopecia: a randomized, double-blind, placebo-controlled trial. Evidence-Based Complementary and Alternative Medicine. doi:10.1155/2014/549721.
2. Panahi, Y., et al. (2015). Rosemary oil vs minoxidil 2% for the treatment of androgenetic alopecia: a randomized comparative trial. Skinmed.
3. Murata, K., et al. (2013). Promotion of hair growth by Rosmarinus officinalis leaf extract. Phytotherapy Research. doi:10.1002/ptr.4712.
4. Hay, I.C., Jamieson, M., & Ormerod, A.D. (1998). Randomized trial of aromatherapy: successful treatment for alopecia areata. Archives of Dermatology. doi:10.1001/archderm.134.11.1349.
5. Pazyar, N., et al. (2013). Jojoba in dermatology: a succinct review. Giornale Italiano di Dermatologia e Venereologia.
6. Boucetta, K.Q., et al. (2015). The effect of dietary and/or cosmetic argan oil on postmenopausal skin elasticity. Clinical Interventions in Aging. doi:10.2147/CIA.S71684.
7. Beoy, L.A., Woei, W.J., & Hay, Y.K. (2010). Effects of tocotrienol supplementation on hair growth in human volunteers. Tropical Life Sciences Research.
8. Trüeb, R.M. (2009). Oxidative stress in ageing of hair. International Journal of Trichology. doi:10.4103/0974-7753.51923.
9. Vincent, M., & Yogiraj, K. (2013). A descriptive study of alopecia patterns and their relation to thyroid dysfunction. International Journal of Trichology. doi:10.4103/0974-7753.114714.
10. Contreras-Jurado, C., et al. (2015). Thyroid hormone signaling controls hair follicle stem cell function. Molecular Biology of the Cell. doi:10.1091/mbc.E14-07-1251.
11. Headington, J.T. (1993). Telogen effluvium. New concepts and review. Archives of Dermatology. doi:10.1001/archderm.1993.01680240096017.
12. Malkud, S. (2015). Telogen effluvium: a review. Journal of Clinical and Diagnostic Research. doi:10.7860/JCDR/2015/15219.6492.
*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.
**Results may vary.
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