Frequently Asked Questions

Straight answers about the routine, shipping, and our 90-day guarantee. Still stuck? Reach out any time — support hours Mon–Sat, 8:00 AM – 5:00 PM EST.

What is actually in RootStim?

Every active is listed in full on each product page and on our Science page — the shampoo's five actives are PDO, biotin, rosemary oil, saw palmetto and caffeine; the conditioner adds keratin, argan and jojoba. No secret blends. Sulfate-, paraben- and phthalate-free.

Does it contain minoxidil?

No. This routine contains no minoxidil and no drug actives of any kind — it is a cosmetic shampoo and conditioner.

The shampoo's five actives are PDO, saw palmetto, caffeine, biotin and rosemary oil; the conditioner adds keratin, argan and jojoba. Every one is named in full on the label and explained on our Science page — no secret blends.

Is RootStim a hair loss treatment?

No. RootStim is cosmetic scalp care — not a drug treatment. It's a daily shampoo-and-conditioner routine that cleanses the scalp, conditions the hair, and supports the look of fuller, thicker-looking hair.

It isn't a medicine, and nothing on this site is medical advice. If your shedding is sudden, patchy, or comes with an irritated scalp, please see a doctor — that's a conversation for a professional, not a shampoo bottle.

How do I use the routine?

Work the shampoo into a wet scalp, leave it a minute, then rinse. Follow with the conditioner from mid-length to ends. Use it as your regular wash, three to four times a week, and give it a full 90 days — a fair test for any scalp-care routine.

Can I use it every day?

Yes. The routine is sulfate-free and gentle enough for daily use. Work the shampoo into a wet scalp, leave it on for two to three minutes so the actives get contact time, then rinse and follow with the conditioner from mid-length to ends.

Most people settle on three to four washes a week and find that's plenty — there's no bonus for washing more often than your scalp wants. What matters is doing it consistently, week after week.

When should I expect results?

Hair works on its own schedule, so here's our honest timeline.

Weeks 1–2: the routine settles in — your scalp feels cleaner and lighter, buildup rinses away, and hair feels softer to the touch.
Around week 6: hair typically feels thicker and easier to style, and many notice it starting to look fuller at the roots.
By week 12: visibly fuller, thicker-looking hair is the goal.

Individual results vary. This reflects what customers typically report over a consistent routine — not a promised outcome. We ask you to judge at 90 days on purpose: that's how the guarantee is built.

Is it safe for sensitive scalps?

The formulas are sulfate-, paraben-, phthalate- and dye-free, and built to be gentle on a fragile scalp — the harsh cleansers are left out on purpose.

That said, every scalp is different. If yours is sensitive or reactive, patch-test a small area first and give it 24 hours before a full wash. If you notice irritation, stop using it and check with your doctor. RootStim is a cosmetic product, not a medicine, and it isn't intended for broken or inflamed skin.

Is it safe for color-treated or chemically processed hair?

Yes. The routine is sulfate-, paraben- and phthalate-free and gentle enough for color-treated and processed hair. As with any new product, patch-test first if you have a sensitive scalp.

Is this for women only?

No — the formulas aren't gendered. RootStim is scalp care for anyone with fine, fragile or thinner-looking hair, and men and women use the same routine the same way.

Most of our reviews come from women, simply because that's who found us first. If you'd prefer a version made for men, we also offer a Men's Thickening Shampoo — same daily-routine idea, different scent and packaging.

Can I use it postpartum or during pregnancy?

RootStim is a rinse-off cosmetic shampoo and conditioner, not a medicine — but we're not in a position to give you medical guidance, and we won't pretend otherwise.

If you're pregnant, nursing, or postpartum, please go through the full ingredient list with your physician or midwife before you start, and follow their advice. Postpartum shedding is very common, and a doctor is the right person to talk yours through with.

Where do you ship, and how long does it take?

We ship across the United States. Your order confirmation and tracking arrive by email; see our Shipping Policy for current timelines.

Can I change or cancel my order?

Email cs@rootstim.com as soon as you can with your order number. If it hasn’t shipped yet, we’ll do our best to update or cancel it.

What if it doesn't work for me?

Then you get your money back. If you're not impressed after your 90-day routine, email cs@rootstim.com with your order number any time within 90 days of delivery, and we'll refund the full amount to your original payment method — even if the bottle is empty.

No photos. No phone calls. No hoops. Keep the bottle. Full details are on our Guarantee page.

How does the 90-day guarantee work?

If you’re not impressed, email cs@rootstim.com with your order number within 90 days of delivery for a full refund to your original payment method. You don’t need to ship anything back. Full details are on our Guarantee page.

Do I need photos or proof to get a refund?

No. The photo program is separate and completely optional. Your refund is never conditional on it.

When will I get my refund?

Typically within 5 business days of your request, to your original payment method. Your bank or card issuer may take a few extra days to show it on your statement.

My order arrived damaged or wrong — what do I do?

Email cs@rootstim.com within 7 days of delivery with a photo, and we’ll send a replacement or refund right away.

Still need help?

Shoot our team an email and we’ll get
back to you as soon as we can.

Is thinning hair hereditary?

For many people, thinning runs in the family. You can’t change your genes, but a consistent scalp-care routine, a balanced diet, and managing stress can all help you look after the hair you have.

Does washing my hair too often cause thinning?

Washing itself doesn’t, but harsh cleansers can dry out your scalp. A gentle, sulfate-free shampoo two to three times a week is kinder to a fragile scalp. Pat hair dry rather than rubbing.

Can stress affect my hair?

Stress can play a role in shedding for some people. Staying active, resting well, and giving your scalp a little regular care all help.

Does dandruff cause thinning?

Dandruff doesn’t directly cause thinning, but an irritated scalp isn’t a happy one. Keep your scalp clean and balanced. If heavy shedding comes with a flaky, itchy scalp, it’s worth checking with a doctor.

Individual results vary. RootStim is a cosmetic scalp-care routine, not a medicine — we describe every ingredient in cosmetic terms, and nothing on this site is medical advice.