We’re also always available by email at hello@kilgourmd.com

Speak with our specialists for personalized consultations. 

Monday - Friday 9am - 5pm PT

The System

The Founder

The Science

Ingredient List

Manage Subscription

KilgourMD

<p>Vitamin C in the Prevention Serum naturally oxidizes over time, causing the serum to appear orange or amber. This does not mean the product has gone bad. Blondes or those with gray hair may notice a light orange tint on hair if the serum touches strands. To minimize this, apply directly to the scalp, wash regularly, and use a clarifying shampoo as needed.</p>

It’s normal for the Prevention Serum to gradually turn more orange over time — this happens when vitamin C is exposed to oxygen. It doesn’t mean the serum has gone bad or lost potency; the color change reflects natural oxidation. Keep bottles tightly closed and stored in a cool, dry place away from sunlight to slow this process. If you notice a strong odor or a change in texture, please contact our support team for assistance. [Learn more link]

What should I do if my serum changes color?

Product Use

Have a question? We are here to help!

Contact Us

What is KilgourMD?

Why is the KilgourMD system unique?

Who created the KilgourMD system?

Can I see Dr. Kilgour in clinic?

Where are the products manufactured?

The Brand

The Science Behind KilgourMD Serums

Are You Currently Conducting Clinical Trials?

How does the two-stage KilgourMD System work?

How should I apply the serums and how often?

How much serum should I use, and how can two droppers cover my whole scalp?

Should I use both serums together or separately?

When can I wash, style, or color my hair after applying the serums?

Will I have to use the KilgourMD serums forever like minoxidil? What if I miss a day?

Will I experience shedding or other side effects?

Can I use the serums on my eyebrows?

Can I use the serums if I have scalp conditions like psoriasis or eczema?

How should I store the serums and how long do they last?

What if the serum changes color or leaves a yellow/orange tint?

Will the serums make my hair look greasy?

Do you offer a fragrance-free version of your products?

Who can use KilgourMD?  Can men use this?

My serum dropper isn’t filling correctly — what can I do?

How long does it take to see results?

Do missed doses undo my progress?

What do I do if I'm experiencing shedding?

Results

What is Redensyl — and is it in your products?

What is Capixyl — and is it in your products?

What is Procapil — and is it in your products?

What is AnaGain — and is it in your products?

What is RootBioTec — and is it in your products?

Why does my Prevention Serum look orange?

Do the KilgourMD serums contain hormones or minoxidil?

What is the difference between the Treatment and Prevention Serums?

Where can I find the full ingredient list for the serums?

How long does one bundle last?

Why do I have different droppers?

What are the different bundles you offer?

Product Information & Ingredients

Are the products safe?

Should I see a dermatologist?

Can I use KilgourMD with other hair treatments or medications?

Can I use KilgourMD with PRP, microneedling, or laser caps?

Can I use KilgourMD during pregnancy or while breastfeeding?

Can I use KilgourMD during chemotherapy?

Can I use KilgourMD with autoimmune or thyroid-related hair loss?

Can I use KilgourMD with oral or topical minoxidil?

Can I use KilgourMD with GLP-1 medications?

Can I use KilgourMD while taking prescription medications?

What if I have allergies or sensitive skin?

Do your products contain hormones or estrogen?

Do you test on animals?

Safety & Compatibility

What’s your 90-day guarantee?

What is your refund policy?

How long do refunds take to process?

How do I apply a discount code or store credit?

Can I cancel or change my order after it’s been placed?

Can I return unopened products?

What happens if I file a chargeback?

How do I manage my subscription?

How do I cancel my subscription?

When will my subscription renew?

When will I be billed for my subscription?

Can I switch between one-time purchases and subscriptions?

What if I was charged twice or have duplicate subscriptions?

Having trouble on the website?

Orders & Subscriptions

What is Flex and what is their relationship with KilgourMD?

How do I use Flex to submit my HSA/FSA?

Why is my HSA/FSA card being declined?

I submitted my Flex itemized receipt for reimbursement and my FSA requires more information.

Help! I didn't receive an email from Flex with my itemized receipt and/or letter of medical necessity. What should I do?

I would like to use multiple HSA/FSA cards to pay for an item. Can I do that?

Is sales tax covered by HSA/FSA funds, or is it treated separately?

What is a Letter of Medical Necessity?

Why do I need to provide KilgourMD with health information?

You should keep it on file for at least three years in the event of an IRS audit of your HSA or FSA account. Occasionally, FSAs may ask for the Letter to confirm the eligibility of your purchase.

Help! I mistakenly entered my name and/or date of birth and need to get an updated letter. Who can I reach out to?

The date on my Letter of Medical Necessity is one day different from my receipt.

My FSA says I need [a product name, NPI number, other info] added to my Letter for approval.

Help! I did not receive an itemized receipt and/or Letter of Medical Necessity from Flex. What should I do?

My HSA/FSA claim was denied. What should I do?

Can I purchase a product now and apply for FSA reimbursement in the next calendar year?

What if the serum changes color or leaves a yellow/orange tint?Updated a month ago