Josh Rosebrook Bioidentical Collagen Serum infuses skin with complete, micro-molecular type 1 collagen grown through a cruelty-free, sustainable fermentation process. The collagen sequence is 100% identical to the collagen found in human skin, so it integrates directly into the skin's own collagen matrix, protecting native collagen, plumping, and renewing from within. A network of plant-derived co-factors, including ectoin, tremella, and turkey tail mushroom, supports the skin barrier and defends against environmental stressors. Vegan. Cruelty-free. Made in the USA. 1 oz airless glass bottle with refillable cartridge.
Key Ingredients
Every ingredient in this formula serves a purpose. No synthetic peptides, no animal-derived collagen, no filler.
Bioidentical Micro Collagen: The primary active. A 100% human skin-identical, micro-molecular type 1 collagen grown from cultivated yeast cells. Its small molecular size allows it to penetrate skin and integrate into the collagen matrix, rather than sitting on the surface.
Ectoin: A plant-sourced amino acid essential to collagen and elastin production. Protects skin from UV stress and dehydration while supporting the skin barrier.
Organic Tremella Mushroom: Delivers deep, lasting hydration and moisture retention. Rich in bioactive peptides that act as a precursor to type I collagen.
Wild Organic Turkey Tail Mushroom: Rich in antioxidants. Supports skin immunity and skin resilience.
Organic Chaga Mushroom: Slows visible signs of aging while protecting against UV damage.
Saccharomyces/Rice Ferment Filtrate: A fermented complex that inspires new collagen production, improves tone, and enhances glow.
Bamboo Stem Extract: Acts as a precursor to collagen production. Supports elasticity, diminishes the appearance of fine lines and discoloration, and improves circulation for a more vital-looking complexion.
How to Use
Recommended for morning and evening use. After cleansing and toning, apply one to two pumps of Bioidentical Collagen Serum over the face and neck using gentle circular pressing motions. Follow with Ultra Peptide Cream, then seal in with Vital Balm Cream and/or Nutrient Day Cream SPF 30.
The Airless Glass + Refillable Cartridge
Bioidentical Collagen Serum comes in a 1 oz airless glass bottle with an internal refill cartridge. Once a cartridge is emptied, remove and replace it with a new one. The bottle ships with a full cartridge; replacement cartridges are sold separately and are not usable without the original bottle.
Tips
A few ways to get the most from this formula:
Apply to clean, toned skin so the micro-molecular collagen can penetrate without interference from other product residue.
Layer under, not over, richer creams. Serum first, oils and cream second, SPF last.
Use both morning and evening for continuous collagen support.
Store away from direct heat to protect the biofermented actives.
Benefits
What this serum delivers and why it outperforms conventional collagen formulas:
Complete, 100% human skin-identical type 1 collagen that integrates into the skin's own collagen matrix, rather than sitting on the surface.
Micro-molecular structure for unprecedented penetration and absorption.
Plumps, renews, and encourages resilient, bouncy skin.
Protects native collagen and helps slow visible signs of aging.
Deep, lasting hydration from bioactive peptides.
Grown through a cruelty-free, sustainable fermentation process that minimizes energy, land, and water use.
Suitable for all skin types, including dehydrated and sensitive skin.
Does Not Contain
This formula is free from the ingredients commonly found in conventional collagen serums:
Animal-derived collagen
Synthetic peptides
Parabens
Phthalates
Synthetic fragrance
Sulfates
Synthetic alcohols or harsh solvents
Petrochemical fillers
Build Your Routine
This serum works best as the first active step in a complete routine:
- Wash with a formula matched to your skin type from the cleanser collection.
- Tone to prep skin for maximum absorption.
- Apply Bioidentical Collagen Serum morning and evening.
- Follow with Ultra Peptide Cream, then seal in moisture with Vital Balm Cream and/or Nutrient Day Cream SPF 30.
For a streamlined approach, explore the Elevated Actives collection for complementary treatment serums. If your skin runs dry or dehydrated, the dry skin collection offers additional hydration support.
