(Refill Packs) Custom Active Phage Serums

Bundle packs of 3, 4, or 5 refill inserts are available for the Custom Active Phage Serum.

HSA/FSA Eligible

Need your first bottle? Sign up for the MD-03 Phage Protocol™ to get started.

As part of our commitment to sustainability, please note that the outer glass package, cap, and dispenser are meant to be re-used. Simply insert your new refill into your original packaging and recycle your old refill insert when done.

$525.00
$525.00

Product Information

Key Benefits How to Use Ingredients Before & After Reviews FAQ

This product addresses 7 out of the
7 Hallmarks of Skin Aging™

hallmarks

Key Benefits

  • Supports resilient skin by balancing bacteria and calming reactivity
  • Reduces blemishes, breakouts, inflammation, and redness
  • Supports healthy aging and skin longevity by addressing the 7 Hallmarks of Skin Aging™
  • Improves tone and smooths texture for brighter, more even-looking skin.
  • Nourishes and hydrates for supple, refreshed skin
  • Protects skin microbiome against environmental aggressors
  • Fortifies the skin barrier

How to Use

  • Apply 2-3 pumps of Custom Active Phage Serum to clean, dry skin, covering the entire face or other skin area you wish to support
  • (Recommended) Follow with Parallel's Daily Reset: Skin Barrier Protecting Moisturizer
  • Important Note: Do not use in combination with products containing benzoyl peroxide, or where denatured alcohol or other harsh ingredients are primary
  • Store in a cool, dry place. Avoid eyes. External use only

Ingredient Highlights

  • Phoenix: **PC-1 Superphage Complex - 10+ billion phages/mL targeting C. acnes **Niacinamide- Improves texture, reduces pores, evens skin tone **Vitamin E- Antioxidant, moisturizes, reduces scars and wrinkles
  • Orion: **PS-1 Superphage Complex - 10+ billion phages/mL targeting S. aureus **Niacinamide- Improves texture, reduces pores, evens skin tone **Vitamin E- Antioxidant, moisturizes, reduces scars and wrinkles
  • Cassiopeia: **PC-1 Everyday Phage Complex - 1+ billion phages/mL targeting C. acnes **Gotu Kola Extract- Stimulates collagen, soothes inflammation, improves elasticity **Retinol- Promotes cell turnover, reduces fine lines and hyperpigmentation
  • Cepheus: **PS-1 Everyday Phage Complex - 1+ billion phages/mL targeting S. aureus **Gotu Kola Extract- Stimulates collagen, soothes inflammation, improves elasticity **Retinol- Promotes cell turnover, reduces fine lines and hyperpigmentation
  • Hercules: **PC-1 Everyday Phage Complex - 1+ billion phages/mL targeting C. acnes **Palmitoyl Tri-Peptide-38- Stimulates collagen, reduces wrinkles Collagen **Peptides- Improves elasticity, hydrates, reduces fine lines
  • Pegasus: **PS-1 Everyday Phage Complex - 1+ billion phages/mL targeting S. aureus **Palmitoyl Tri-Peptide-38- Stimulates collagen, reduces wrinkles Collagen **Peptides- Improves elasticity, hydrates, reduces fine lines
  • Hydra: **PC-1 Everyday Phage Complex - 1+ billion phages/mL targeting C. acnes **Vitamin C- Antioxidant, promotes collagen, brightens skin **Hyaluronic Acid- Hydrates, plumps skin, reduces fine lines
  • Delphinus: **PS-1 Everyday Phage Complex - 1+ billion phages/mL targeting S. aureus **Vitamin C- Antioxidant, promotes collagen, brightens skin **Hyaluronic Acid- Hydrates, plumps skin, reduces fine lines

Before + After

Customer Reviews

Based on 3 reviews
100%
(3)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
C
C.Z.
My skin complexion has never looked better

I love using the custom active phage serum because it is specific to my skin microbiome type. My skin has really benefited since using the serum because it's being given the proper actives and the appropriate phage to combat my acne. My skin looks brighter and smoother since using the serum!

J
Jill C.
Super convenient when you need more!

I use Delphinus for my body, which requires more regular replenishment. Also, I live outside of the US, so buying 4-5 at a time helps me save on shipping.

A
A.B.
Amazing science

This serum is the perfect combination of skincare and science. It feels great on my face and the smell is very refreshing. Not only does it make my face feel good, but the phage in the serum makes my skin look better too!

Frequently Asked Questions

Recommended Products
AWARD WINNER DERM-LOVED BEST-SELLER

Blue Biotic™ Multi-Effect Peptide Cream

Botox in a jar, but better. The Blue Biotic™ is the ultimate in anti-aging and skin healing, featuring a...

MD-03 Phage Protocol™

Discover your skin microbiome, then receive a monthly supply of your Custom Active Phage Serum. Includes free testing every 6...