The MD-03 Phage Protocol™
Your complete, personalized plan.

The MD-03 Phage Protocol™
Your Complete,
Personalized plan.

Unlock your skin health and longevity with the MD-03 Phage Protocol™, a precision-driven solution catered to your unique skin microbiome. Get ready to live in your best skin.
• HSA/FSA eligible •

Build Your Protocol
md03 hero.jpeg__PID:e40a0b31-c350-47dd-8246-fa2a47095668mobile hero.jpg__PID:52ac03e9-38ac-41e4-9d20-72af30f0f89f

Product Information

MD-03 Phage Protocol™

How it works

is this for me?

skin discovery test

What’s a phage serum?

clinical support

How it works.


Image 1
Image 1

Skin Discovery Test


Image 1
Image 1

Active Phage Serum


Image 1
Image 1

1:1 Provider Support


Skin DiscoveryTest

Our at-home Skin Discovery Test uses whole genome sequencing to provide the most comprehensive report of your microbial composition and skin health.


Active Phage Serum

A Custom Active Phage Serum delivers key microbiome-nourishing ingredients and a potent phage cocktail that begins within 24 hours to combat pathogenic bacteria.


1 : 1 Provider Support

Our care platform provides all members with 1:1 provider support and guidance, as well as supplemental evaluation and personalized prescriptions as needed.

Before + After

Group 224049.jpg__PID:e5a053bf-6dee-461b-a669-9ee8db66f145ba mobile.jpg__PID:fdbad8d1-3a52-4c03-a938-acc1e45d2072
Group 224048.jpg__PID:53bf6dee-b61b-4669-9ee8-db66f1455e8e
Group 224047.jpg__PID:a053bf6d-eeb6-4ba6-a99e-e8db66f1455e

Is MD-03 for me?

This precision system not only addresses specific skin concerns like inflammation, breakouts, discoloration, and fine lines, but also promotes skin longevity. With clinical oversight by board-certified doctors and skin scientists, Parallel's flagship MD-03 Protocol can help treat aging, acne, melasma, rosacea, eczema, and more.



An immune response in the skin marked by redness, swelling, heat, and pain, which can cause accelerated aging.

Group 223922.png__PID:76449170-851c-4519-98db-a39222be6479

Fine Lines & Wrinkles

Shallow and deeper creases due to loss of collagen and elasticity most commonly seen on the forehead and around the eyes, nose and mouth



A condition where the skin lacks moisture in its outer layer, leading to flaking or cracking, enabling certain pathogenic bacteria to grow


Rough Texture

Uneven or coarse skin, often caused by environmental/UV damage, internal factors, or scarring from prior surgeries or skin issues.



A condition where patches of skin become darker in color than the surrounding skin, which can be caused by changes in hormones or bacterial composition.

What will I learn through my Skin Discovery Test?

Parallel's Skin Discovery Test is the most advanced, quantitative skin microbiome test on the market today. Every report reveals Skin Microbiome Type(s)™, skin age, bacterial assessment, diversity score, and hydration levels, along with personalized recommendations.

What’s in my custom Active Phage Serum?

Powered by Parallel’s unique, high-titer phage technology, Custom Active Phage Serums naturally roll back your pathogenic bacteria and enable beneficial bacteria to flourish. Targeted phages superboost your skin health when combined with various key actives featured across unique serums, supporting balance, clarity, and radiance. Dermatologist-approved, for healthy, youthful, more resilient

Formulated thoughtfully

Group 224075.jpg__PID:5909e723-0f10-40c2-a10a-25ea8dc881daGroup 224076.jpg__PID:0f1090c2-e10a-45ea-8dc8-81dabd4c7900

How will my provider
work with me?

As part of your MD-03 protocol, our doctors work closely with you 1:1 to create an optimal system catering to your unique skin microbiome and concerns. On-going support is offered via text 24/7.

We’ve got you covered!

HSA/FSA eligible

Pause anytime

60-day guarantee on your first phage serum

Build Your Protocol
Rectangle 63.jpg__PID:cd8c20b5-27a6-48b6-8aba-5aae5aeab6ae

Customer Reviews

Based on 10 reviews
Jill C.
Truly life-changing

The MD-03 Protocol has changed my life. I have tried everything. Skincare products, over-the-counter products, doctors, prescriptions. It has been a really frustrating last few years. With Parallel, I know exactly what bacteria is causing my issue and I got my phage for it (I'm Type 5, Hercules). My redness and inflammation has gone down and new breakouts are really mild. It's not over, but I'm seeing improvement without side effects! This is truly life-changing.

Worked overnight!

I've had a very red, painful, cystic bump on my chin from an ingrown hair and shaving. I tried to get rid of it with other products and extraction, which seemed to make it worse. A friend suggested that his custom phage product from Parallel might work for me, too. Overnight, the pain went away and it's much less red. This stuff works! I'm impressed and about to purchase my own.

Ivan De La Torre
This Product Changed My Skin!

Most recently, I have battled persistent acne, and it seemed nothing I tried could truly clear my skin. New breakouts appeared weekly, and I grew increasingly frustrated as expensive cleansers, serums, prescription medications, and facials failed to provide lasting results.

Then, I discovered this facial product, and it has absolutely transformed my skin! The breakouts have ceased entirely, and my complexion is the clearest it's ever been. I have integrated these serums into my daily skincare routine, and I will never go back.

Saskia Nislow

This has worked for me like no other product!


Within just one week... I noticed a remarkable difference in my skin...leaving behind a noticeably clearer and healthier complexion. It's as if this serum understood my skin's needs like no other product before.